[Applause] math five quarter one week one lesson two milk base let's learn about divisibility rules for 3 6 and 9 to find the common factors of numbers hello kids it's me teacher Pro don't forget to subscribe like and share and hit the notification Bell for the latest video you can also follow my Facebook page teacher frail TV welcome back kids today we will learn about divisibility rules for 3 6 and 9 to find the common factors of numbers at the end of this lesson you are expected to use the visibility rules for 3 6 and 9 to find the common factors of numbers hello kids today you will learn about how to use the visibility rules for 3 6 and 9 to find the common factors of numbers from the previous lesson you have learned the divisibility rules for 2 5 and 10 in finding the common factors of large numbers this time you will learn the rules to determine if the number is divisible by 3 6 and 9. let us do the first activity Learning task 1. observe the following divisibility rules in the example below number one is 27 divisible by 3 yes because the sum of its digit is divisible by three two plus seven equals nine is divisible by three number two is 144 divisible by 6 yes because 144 is divisible by 2 and 3. so it is also divisible by six number three is eighty seven thousand six hundred fifty one divisible by nine yes because the sum of its digit is divisible by nine eight plus seven plus six plus five plus one equals 27 27 is divisible by nine a number is divisible by three if the sum of all the digits of the number is divisible by three a number is divisible by both 2 and 3 then it is divisible by six a number is divisible by nine if the sum of all the digits of the number is divisible by 9 or a multiple of nine learning task two copy the given table in your notebook put a check under the correct column by which the numbers are divisible number one 245 is this number divisible by two five and ten correct this number is divisible only by five number two 330 is this number divisible by 2 5 and 10 correct this number is divisible by two five and ten number three 400 is this number divisible by 2 5 and 10 correct this number is divisible by two two five and ten number four 412 is this number divisible by two five and ten correct this number is only divisible by two and number five 875 is this number divisible by two five and ten correct this number is divisible by 5 only Now read and solve the given problem Hannah's Garden has 126 sunflower plants she wants to arrange them by group of 3 6 and 9. the question is can she arrange the sunflower by three yes 126 is divisible by three because the sum of its digit is divisible by three one plus two plus six equals nine which is divisible by three next question can she arrange the sunflower by six yes 126 is divisible by 6 because it is divisible by both 2 and 3. then it is divisible by 6. 126 is divisible by 6. and then last question is can she arrange the sunflower by nine yes 126 is divisible by 9 because the sum of each digit is divisible by 9. 1 plus 2 plus 6 equals nine which is divisible by 9. look at the divisibility chart for 3 6 and 9 below divisible by three 126 divided by 3 equals 42. divisible by 6. 126 divided by 6 equals 21. divisible by 9. 126 divided by 9 equals fourteen for learning test 3 copy the table in your notebook classify the given numbers to the appropriate column those numbers which are divisible by 3 are 1128 2235 7134 9120 four thousand two five thousand six hundred sixty one nine thousand nine hundred ninety nine five thousand four and two thousand eighty eight and now those numbers which are divisible by six are 1128 four thousand two nine thousand one hundred twenty five thousand four seven thousand one hundred thirty four and two thousand eighty eight and then those numbers which are divisible by nine are five thousand four two thousand eighty eight five thousand six hundred sixty one nine thousand nine hundred ninety nine and the numbers which are not divisible by any of these three numbers are 5228 1124 21001 1750. 6625 3122 4445. 7886. and 9457 learning task 4. we took numbers in the boxes are divisible by the number on the left number one the numbers which are divisible by three are two hundred seventy four hundred eleven and 702. number two the numbers that are divisible by 6 are 528 and 612. number three the numbers which are divisible by 9 are 621 693. and 477 and number four the number which are divisible by three are 432 630. and 381. remember a number is divisible by 3 if the sum of all the digits of the number is divisible by 3. a number is divisible by both 2 and 3 then it is divisible by 6. a number is divisible by 9 if the sum of all the digits of the number is divisible by 9 or a multiple of nine kids are your all answers correct wow good job kids I hope you learned a lot from this lesson until our next topic bye bye kids thanks for watching [Music]