welcome YouTubers to another episode in my grammar hero Series in this video there's going to be 16 practice test questions that should closely mirror what you should expect to see in the arithmetic reasoning subtest of both the arm Services vocational aptitude battery that is the ASVAB as well as the pre-screening internet delivered computer adaptive test that is the pat as a quick reminder you'll have 39 minutes to answer 16 questions on the actual asbab and Pat and likewise you're not going to be permitted to use a calculator or a reference sheet that said you'll have uh scratch paper and a pencil with which to do your work in order to get the most from this video of course you'll want to pause a video before I read a practice test question attempt to work it out on your own and then resume playing the video to check your solution finally I want to mention this and I can't stress this enough I do not personally recommend that you pay for tutoring or access to online boot camp or mobile apps the reality is there are some dishonest people out there who will try to sell you stuff that doesn't belong to them and if you stick with free resources you'll have plenty of practice problems uh to get ready for either of these tests and truth be told the vast majority of you are smart enough to pass this very simple test on your first try as long as you spend anywhere from a week to 3 weeks studying for it guys this isn't the SAT this is a water down version of elementary middle school and high school math if you study on your own diligently enough you will be able to learn this material and pass this test with no issues whatsoever so with all that finally being said let's go ahead and get started with these practice test questions this arithmetic reasoning practice test question for the ASVAB and pikat says Andy went to the grocery store to buy bananas if each banana cost 78 cents and he spent 4 68 how many bananas did he buy so to answer this one we're simply going to do 468 / 78 cents of course you can't do long division with a decimal outside the division bracket so we're going to take this decimal in 78 and shift it two times to the right to rewrite that as 78 and we're going to shift this decimal in 468 a corresponding number of times that is one two times to the right to rewrite that as 468 what is 468 ID 78 well you know it's got to be one of these answer choices I'm going to say it's going to be closest to six so off to the side I'm going to do 78 * 6 and see if this gives me my answer 8 * 6 is 48 so carry a four 7 x 6 is 42 uh 43 44 45 46 so 78 * 6 is exactly 468 with no remainder so we know that Andy must have bought B6 bananas you do have to be a able to do long division with decimals for the ASVAB and PCAT this arithmetic reasoning practice test question for the ASVAB and PCAT says a sweater design calls for the following balls of yarn 10 white three green and two yellow what percentage of the yarn is green so to answer this one we're going to write a fraction and in our denominator we're going to add up all the balls of yarn that were used to make the sweater we had 10 white three green and two yellow what percentage of the yarn was green well there were three green balls of yarn so that's going to be our numerator uh so let's go ahead and simplify this this becomes 3 over uh 15 and three and 15 have a common factor of three uh 3 divid 3 is 1 15 / 3 is 5 now many of you know that 1 is equal to 0. 2 which is 20% that said if you did not know that 1 is equal to 02 which is the same thing as 20% you would treat this as long Divi Division and say 1 / 5 how many times does 5 go into one it doesn't so we have to add our decimal here in a zero placeholder bring our decimal into our answer how many times does five go into 10 that's two times of course 5 * 2 is 10 we have no remainder so we're done and that's how we got our 0 2 using long division likewise you could have said this uh you could write all fractions over 100 to convert him to percent if you multiply uh 5 by 20 and its numerator by 20 this becomes 20 over 100 which is 20% so regardless of how you did it you still get the same answer arithmetic reasoning practice test question for the ASVAB and piket says to reach his Treehouse Ray must climb 9 and 13 feet up a rope ladder and then 8 and 56 feet up the tree trunk how far does he climb in total so we're simply going to add 9 and 1/3 and 8 and 56 together the easiest way to do this is to do eight and nine off to the side so 9 + 8 you should know is going to be 17 and then we're going to add 1/3 and 56 together separately in order to add these two fractions they have to have the same our common denominator uh three and six both go into six so we're going to rewrite uh these with a common denominator of six again 56 already has a denominator of six and uh we're going to multiply three by two uh to make it six and we're also going to have to do that to its numerator 2 * 1 is 2 uh when you add fractions you keep the denominator the same and then you just add your numerators 2 + 5 is 7 all right so this becomes 17 plus 76 which we're going to convert to a mixed number via long division 7 / 6 6 goes into 7 one time without going over 1 * 6 is 6 7 - 6 is 1 so this one is going to be our whole number this remainder of one's going to be our numerator and this six is going to be our denominator 17 + uh 1 and 1 16 is going to be 18 and six there's nothing hard about this problem uh the answer is B this asab Pat arithmetic reasoning practice test question says an Tran charges a flat fee of $35 per service call plus $25 per hour for the work he performs at a customer's house if he did a service call that took three hours how much was the customer's bill so the bill is going to be equal to his flat fee which we know is $35 plus his hourly rate which is $25 per hour times the time he spent working and in this case he spent three hours working so this is going to be 35 + 25 * 3 which is 75 if you can't do this Mally do it off to the side we have 35 Plus 75 5 + 5 is 10 so bring down a zero carry a one 3 + 7 is 10 + 1 is 11 so the customer's total bill it's going to be $110 which is answer Choice B of course it's arithmetic reasoning practice test question for the asab and pette says how many 5 and 1/4 ounce glasses can be filled from a 31 and a half ounce container of apple juice so we're going to do 31 and one2 / by 5 and 1/4 uh to do this division we first have to con convert these mixed numbers to improper fraction so let's do that next uh to convert 31 and a half to an improper fraction we do 31 * 2 which is going to be 62 + 1 63 and that's going to be over two and this is divided by 5 and 1/4 let's convert that to an improper fraction 5 * 4 is 20 20 + 1 is 21 and this is over four so now we're dividing two fractions or two improper fractions so we're going to follow the algorithm Keep Change Flip we're going to keep this top fraction the same so this is going to remain as uh 63 over2 we're going to change from division here to multiplication and then we're going to flip this bottom fraction to be 4 over 21 all right let's go ahead and cross reduce to make this math a little bit easier uh two goes into two one time two goes into four uh two times likewise you should know this seven goes into 21 three times and S goes into 63 nine times so what does this become this becomes 9 over one times 2 over3 when you multiply fractions you just multiply straight across 9 * 2 is 18 1 * 3 is 3 18 ID 3 is 6 so this one is C6 you can get six glasses from that container of apple juice arithmetic reasoning practice test question for the as Fab and PCAT says a music concert is 3 hours long during the concert there is 127 minute intermission what percentage to the concert is the intermission so right away you can see something's given in terms of minutes and hours so we're going to have to make a conversion uh for this one you have to know that there are 60 Minutes in 1 hour and as a matter of fact I'm going to convert 3 hours to minutes you do 60 * 3 which most of you should be able to do mentally so there are in other words 180 minutes and 3 hours uh now let's calculate this percentage again the concert has an intermission of 27 minutes concert itself is 180 minutes long uh so by reducing this fraction uh to decimal we'll be able to convert to percent very quickly you should see that 27 and 180 have a common factor of 9 uh 27 / 9 is 3 180 divid 9 well 18 ID 9 is two and just tack on that zero so let's convert 3 over 20 to percent there's a couple ways you can do this one uh the way I like to do this one is to write this as a fraction over 100 because all fractions over 100 can be written as percent mentally uh so to make 20 100 we're going to multiply it by five and 20 * 5 is 100 also going to do that to its numerator we're going to multiply this by 5 3 * 5 is 15 15 over 100 is 0.15 or 15% all right the other way to solve this one is to do uh 3 ID by 20 that is to say to do the long division uh 20 doesn't go into three so we have to add our decimal and a zero placeholder bring our decimal into our answer how many times does 20 go into 30 without going over it's going to be uh one time 20 * 1 is 20 30 - 20 is 10 again we have a zero here that we can bring down how many times does 20 go into 100 without going over that's 5 time 20 * 5 is 100 we have no remainder so we can stop so as you can see whether you take this approach or this approach you still get the same result of 15% this arithmetic reasoning practice test question for the asbab and PCAT we're trying to figure out how much James makes if he works 40 hours a regular time 10 hours overtime if he makes $12 per hour for regular time and time and a half for overtime so let's do 40 time 12 to figure out how much he gets paid for regular time again you should be able to do this mentally 4 time 12 is 48 therefore 40 * 12 is going to be 480 if he makes $12 an hour for regular time how much does he make for time and a half well what is uh half of 12 uh that is six so time and a half he makes $12 an hour plus six that's the half there is 18 uh he worked 10 hours of overtime at a time and a half rate 18 time 10 is 180 now we just add these up to get our final answer here 0 16 carrier one 4 five6 so he makes 660 uh if he works 40 hours and 10 hours of overtime this arithmetic reasoning practice test question for the asab and Pat says what is the price of a $40 shirt after successive discounts of 10% 10% and 20% so in a previous video I solved this one the Long Way truth be told a large part of this problem is supposed to be mental math and let me just point this out you can't add 10% 10% and 20% and just take a 40% discount that would give you the wrong answer instead you have to do these successive discounts individually so first let's do the first discount of 10% what and here comes the mental math part what is 10% of 40 that's going to be $4 so 40 - 4 gets you to 36 all right so that's this first discount what's 10% of 36 well that's going to be 360 so by doing this subtraction right here uh we'll get our second 10% discount 0 - 0 0 0 - 6 we can't do we have to borrow this becomes five this becomes uh 10 10 - 6 is 4 drop down our decimal 5 - 3 is 2 uh and 3 - nothing is three so we just did our second 10% discount we did these for the most part using mental math if you didn't use Mental Math this problem would be very tedious so finally we got to take a 20% discount of 3240 so we're going to take 3240 and multiply by 02 which is the decimal equivalent of 20% of course we're going to move this decimal one two times to the right here and then one time to the right here for a total of three times this becomes uh 3240 times two albe it with three decimals to move back in when we're done 0 * 2 is 0 4 * 2 is 8 2 * 2 is 4 3 * 2 is 6 bring our three decimals back in 1 23 we can see that 20% of 3240 is 648 so now we're going to apply this 20% discount which means we're going to do 3240 - 648 and again you have to be able to add subtract multiply and divide with fractions for the As faab and PCAT 0 minus 8 we can't do we have to borrow this becomes three this becomes 10 10 - 8 is 2 3 - 4 we can't do we have to borrow this becomes one this becomes 13 uh 13 - 4 is 9 drop down our decimal in place 1 - 6 we can't do this becomes two this becomes 11 11 - 6 is going to be five and 2 minus nothing is two so after successive discounts of 10% 10% and 20% first two of which we calculated mentally and then the last one we did by hand you arrive at a uh price of 2592 which is answer Choice C again if you can't do these first two discounts mentally you can work them off to the side but that's really not how this problem is set up this arithmetic reasoning practice test question for the ASVAB and PCAT says Cheryl has a small rectangular Garden that has a 24t perimeter the width of the garden is exactly 1 half of its length what is the area of Cheryl's Garden in square feet so we know its perimeter is 24t and we want to find its area how do you find area area is simply length times width for a rectangle and the question is given this information how are we going to calculate its area well uh we're told right here that it's width is exactly half of its length so here's a rectangle I'm going to call its length L and if its width is half of its length we could call its width half L now how do you find the perimeter of any regular polygon including a rectangle you simply add up all of its sides so if we start here and go this way that's going to be half of L plus L plus half of L plus L and we know what's more its perimeter is 24 so this is 24 equals L and L is 2 L half an l and half an L is 1 L so in total this is 3 l divide both sides by three now to get L by itself 24 divid 3 is 8 so we know its length is 8 its width is half of L half of 8 is four let's find its area now again we know L is 8 and wi is uh four 8 * 4 is 32 its area is C 32 square ft this arithmetic reasoning practice test question for the ASVAB and piket says a person wants to install an inground swimming pool that would be 25 ft long 18 ft wide and 4T deep what volume of dirt will need to be excavated for this pool so this is kind of what that looks like uh we're going to be finding the volume of this rectangular prism and how do you find the volume of a rectangular prism it's very simple and you do have to know this formula it's length time width time height and thankfully enough we were given all these values in the problem we know our length is 25 we know our width is 18 and we know our depth is four so our height is four um we could do some quick Mental Math here to make this easy 25 Time 4 we know is going to be uh 100 so this is 100 time 18 now when you multiply a number by a power of 10 such as 10 100 a th000 and so on all you do is you take that decimal in the number so here's the decimal in 18 we're multiplying it by 100 which has two zeros so we're going to move this decimal place one two times to the right to make this 1,800 so 100 time 18 is 1,800 this one is going to be C again mental math tricks like this will speed up uh your work and make it more accurate so that is that one it's arithmetic reasoning practice test question for the ASVAB and PCAT says what is the approximate surface area of a box that is 8 in wide 12 in tall and 9 in long so uh let's write down these three things we have a box that is 8 in wide so its width is W uh 12 in tall so its height is 12 and 9 in long so its length is nine now the formula to find surface area is not one that you have to memorize just remember this the surface area of a rectangular prism which is a box looks like this 2 * and we put something in parentheses plus two times we put something in parentheses plus two times and again we're going to put something in parentheses well what do we put in these three sets of parentheses all we have to do is multiply all three of these things together so in this one I could do width times height and this one I could do with width time length and in this one I could do height time length as long as you know that you don't really have to memorize this formula that said let's go ahead and plug these values in uh width and height is 8 * 12 plus width and length is going to be 8 * 9 plus uh height and length is 12 * 9 all right let's work this out now if you don't remember what 12 * 8 is you could always do it off the side again you have 12 * 8 uh that's 16 carry a 1 89 so this is 2 * 96 Plus 8 * 9 you can use your hand for that one you know that's going to be 2 * 72+ 2 12 * 9 if you don't remember that one do it off to the side we have 12 * 8 over there you could add 12 to that or you could do it this way 2 * uh 9 is 8 carry a 1 1 * 9 is 9 + 1 is 10 so this 2 * one8 all right so now we got to work out 2 * 96 2 * 72 and 2 * 108 I'm going to do that down here 96 * 2 again 6 * 2 is going to be 12 carry a 1 2 * 9 is 18 19 so this is 192 plus let's do 7 2 * 2 right here uh 2 * 2 is 4 7 * 2 is 14 so that's 144 and then 2 * 108 108 * 2 at 16 carry a one that's 0 + 1 is 1 and then 2 * 1 is 2 let's add all this up now I'm going to do it off to the side so it's not to make any mistakes here uh we have 192 144 and 216 uh 6 and 4 is 10 + 2 is 12 carry a one uh four and one is five uh nine and one is 10 uh 10 and five is 15 Cara one 2 three four five all right so it surface area as you can see is a 552 Square in very tedious problem but nothing too hard it's arithmetic reasoning practice test question says the cost of a leather jacket went up from $60 to $90 what is its percent increase in price so you have to know the percent change formula for this one it's very easy to remember you're going to take the new price minus the old price divided by the old price and multiply that resulting decimal by 100 so let's go ahead and work this out what is its new price its new price is 90 so we'll put 90 right here what was its old price its old price was 60 again this this is over 60 * 100 uh 90 - 60 is 30 so this is 30 over 60 * 100 again cross out these corresponding zeros this says uh 3 over 6 * 100 uh you should know that we can reduce uh three and six by a common factor of three uh 3 divid 3 is 1 6 / 3 is 2 * 100 what is the decimal equalent of 12 it's .5 * 100 when you multiply a decimal by 100 you take that decimal and you shift it to the right according to how many zeros you're multiplying it by there are two zeros and 100 so one two in other words it's price increased by D 50% this arithmetic reasoning practice test question for the as Fab and pikit says on a trip you drove 350 miles at an average speed of 50 miles per hour on your way home you drove an at an average speed of 70 mph how long did it take you to complete the trip so to answer this one we're going to use two iterations of distance formula again the distance formula says distance is equal to rate time time and so we're going to use as I mentioned two iterations of this formula what is the distance in both cases so we know it takes 350 Mi to go there and 350 Mi uh to go back so in both cases our distance is is going to be 350 mil so let's fill that in accordingly and what is going to be the rate well on the way there you go 50 mil per hour so that's our rate over here and that just leaves us with uh T to solve for and on our way back we go 70 mil hour so that just leaves us with t to solve for so to find out how long it took us to complete the trip in total we'll solve for T here we'll solve for T here and then we'll add that together this is very easy to do divide both sides by 50 to get T by itself this crosses out leaving you a t over here cross out these coresponding zeros 35 / 5 is 7 so it took 7even hours to go there uh let's solve for T over here by dividing both sides of the equation by 70 this crosses out leaving you a t over here cross out these corresponding zeros 35 ID 7 is five so it took you 5 hours to get back so in total it took you 7 plus 5 hours of driving which is going to be 12 hours in total so this one is going to be D this arithmetic reasoning practice test question for the asab and piket says Michael loan Jack $1,500 at a simple annual interest rate of 7% if he repaid the loan after two years how much would he have to pay so this is testing your knowledge of simple interest simple interest is given by the formula interest I equals principal times rate times Time by multiplying these three things together we'll be able to figure out how much Michael acred in interest but to figure out the total that he has to pay back we're going to take his principal that is the amount he borrowed and to that we're going to add the interest that he owes so in this case we're going to start by calculating interest again interest is equal to principal what is principal it's the amount he borrowed so that's going to be $15 00 times rate that's the interest rate in this case he had an interest rate of 7% which in decimal form is 0.007 time time how long did he take the loan out for he took it out for two years so this is multiplied by two all right so let's do this math the easy way 1,500 * 2 is 3,000 time 007 again I'm going to do this off to the side so as not to make it mistakes we have 3,000 * 007 again we're multiplying a whole number by a decimal so move this decimal one two times to the right to make this 3,00 * 7 albeit with two decimals to move back into to the left 7 * 0 0 7 * 0 0 7 * 0 0 7 * 3 is 21 bring our two decimals back in one two so we can see the amount of Interest he uh accured on that loan is $210 how are we going to calculate the total he has to pay back well that's the principal that he borrowed ,500 plus the interest he accured notably $210 what is500 plus 210 if you can't do that mentally do it off to the side like I'm doing down here 017 one so he's going to have to pay back $1,710 in total it's arithmetic reasoning practice test question for the asab and Pat says a wooden box is 1 foot high 3 feet wide and 5T long Bob is going to use it to for a tabletop and plans to paint the four sides and top how many square feet will be painted so we're talking about finding the surface area of this box excluding uh the bottom of it so we're going to have to calculate surface area and the first thing I like to do whenever I have to calculate surface area let quickly write down length width and height because this helps me uh write the formula without really having to memorize anything again according to problem its height is 1 foot its width is 3T its height is 5T how do we find the surface area of a rectangular prism or a box well it looks like this 2 * something in parentheses plus 2 * something in parentheses plus 2 * something in parentheses well what do we put in the parenthesis we just have to make sure to multiply uh length width and height all together so in this one I could put length times width this one I could put length time height and then this one I can put width times height now that said we are not painting the bottom of this box right so we have to exclude that from part of this formula again this two represents left and right uh front and back and top and bottom so we have to figure out which part of this formula we're going to modify to get rid of the bottom well we can see the bottom has a length and a width and so we only need length and width for the top of the box not the bottom so this is our new modified Formula 2 * length time height plus 2 * width time height now let's just plug values in and work this out this becomes very easy now length and uh width is 5 * 3 + 2 length and height is going to be 5 * 1 and width and height is 3 * 1 this becomes 15 plus 5 * uh 1 is 5 * 2 is 10 uh 3 * 1 is 3 * 2 is 6 this is 25 + 6 which is 31 so he's going to be painting uh 31 uh Square ft arithmetic reasoning practice test question for the asab and Pat says in a group of 10 students seven or 13 years old and three or 17 years old what is the average age of these 10 students so normally to calculate an average you would take the sum of the data points that you're given and you divide by how many data points you added together in this case we're actually going to calculate a weighted average again we're still G to divide by the number of things we add together in that case it's going to be 10 since there are 10 students in this group that said uh we don't have their individual ages instead we're told that seven are 13 years old so that's going to look like this 7 * 13 plus uh 3 are 17 years old so that's going to be 3 * 17 and just like that we're able to calculate our weighted average and I'm going to do this math off to the side uh again we have 13 times 7 uh 3 * 7 is 21 carry a 2 1 * 7 is uh 7 + 2 is 789 so this becomes 91 plus again this is over 10 17 * 3 we have 17 * 3 7 * 3 is uh 21 carry a 2 1 * 3 is 3 + 2 is 5 so this is 91 + 51 / 10 if you can't do 91 1 + 51 mentally do it off to the side again there's no shame in doing that on test day this is 1 plus 1 or two 9 + 5 is 14 this is 142 / 10 and the beauty about this problem is whenever you divide a number by a power of 10 such as 10 100 a th000 and so on you just take that number the decimal in that number so in 142 there's technically a decimal at the end of it right here and you shift it to the left according to how many zeros there are in the number you're dividing by so we have one Z and 10 all we have to do is move this one place to the left to make this 14.2 so the average of the 10 students ages is C 14.2 SAS VAP Pik at arithmetic reasoning practice test question says two tanks are partially filled with 96 gallons of water each as shown tank a is 4 fths full and tank B is 2/3 full what is the maximum amount of water that can be held in both tanks together so we're going to translate these statements into equations that we can then solve let's start with tank a they're 96 gallons of water in tank a and that is equal to 4 FS of tank A's capacity so 96 equal 45s a we're going to solve that for a to get its maximum capacity let's go ahead and do the same thing for B again there are 96 gallons of water in tank B and that's equal to 2 third of tank B's total capacity by solving this for B we'll know its total capacity and then we'll add these two values together how am I going to solve for a I'm going to clear four fits by multiplying both sides of this equation by its reciprocal notably by five over four this crosses out leaving you with just a over here uh let's write 96 as a fraction by placing it over one and before we do this math let's try to Cross ruce Four goes into four one time how many times does four go into 96 we'll do 96 / four off to the side four goes into 9 two times without going over 4 * 2 is 8 9 - 8 is 1 drop down this 6 4 * 4 is exactly 16 uh so this is four goes in a four one time four goes in a 96 24 times this is 5 over one which is just 5 * 24 over 1 which is just 24 so a is equal to 5 * 24 you can't do that mentally do it off to the side 24 * 5 4 * 5 is uh 20 bring down a zero carry a 2 2 * 5 is 10 + 2 is 12 so tank a has a maximum capacity of 120 gallons let's find the maximum capacity of tank B again we're going to get rid of this 2/3 in front of B by multiplying both sides of this equation by its reciprocal notably by 3 over2 this crosses out here and here leaving you with B on this side and again we're going to write 96 as a fraction by placing it over one and we're going to cross reduce two goes into two one time how many times does two go into 96 we'll do 96 / two very quickly uh two goes into nine four times without going over 2 * 4 is 8 9 - 8 is 1 drop down this six 2 * 8 is 16 so we have no remainder uh so this says uh two goes into 90 6 48 times so this is 3 over 1 which is just 3 * 48 over 1 which is 48 so B is 3 * 48 again if you can't do that mentally do it off to the side we have 48 * 3 uh 3 * 8 is 24 carry a 2 3 * 4 is 12 13 14 so tank B's maximum capacity is 144 gallons how much water can they both hold together well we have 12 gallons in tank a 144 gallons in tank B so we'll do uh 144 + 120 that's going to be 4 6 2 so they can hold 264 gallons together pretty tedious problem but uh pretty simple map to do it ASVAB Pat arithmetic reasoning practice test question for the ASVAB and Pat says tennis court is 78 feet long divided into two halves by net for singles play the court is 27 feet wide for double PL an additional four and a half feet are allowed to be used along each of the two longer sides how much larger is the area of the double Court than the singles court so we're talking about a tennis court both of those are going to be rectangles so their areas are going to be length times width and both quarts what's more have a length of 78 so let's go ahead and write that in for both of these areas what is the width of the singles Court well according to the problem it's 27 feet what is the width of the doubles quart well according to the problem you get an extra 4 and 1/2 ft here and an extra 4 and 1/2 ft here 4 and a half and four and a half is N9 9 + 27 gets you to 36 as your width for that now you have to do some tedious math we're going to multiply these out and then we're going to subtract a bigger area from the smaller area and I'm going to do that right here so I don't make any mistakes here uh 7 * 8 is 56 carry up 5 7 * 7 is 49 + 5 is 54 add a zero placeholder uh 2 * 8 is 16 carry 1 7 * 2 is 14 + 1 is 15 add these up this is going to be six 10 so bring down a zero carry a one 10 11 uh carry a one 1 plus one is two so the area of the smaller court is 2,16 Square fet let's do this math over here we have 78 * 36 uh 8 * 6 is going to be 48 carry a 4 7 * 6 42 43 44 45 40 six add a zero placeholder 8 * 3 is 24 carry a 2 uh 7 * 3 is 21 22 23 let's add this up now eight again this is 10 so carry one 78 and then two so the area of the doubles qut is 288 to find the difference we just subtract them and I'm going to do 288 minus 2,16 thankfully enough this is the easiest part of the problem 8 - 6 is 2 0 - 0 is 0 uh 8 - 1 is 7 2 - 2 is z so the difference is c72 square ft very tedious problem