HESI A2 Mathematics Full Review

Introduction

• Review for HESI A2 math section, also applicable for TEAS and Kaplan exams.
• Math is universal; concepts covered are consistent across exams.
• Encouragement to subscribe to the channel for more content.

Exam Structure

• Time: 50 minutes
• Questions: 55
• Tools Provided: Scratch paper, digital calculator
• Topics Covered:
  • Basic math operations
  • Fractions
  • Decimals
  • Roman numerals
  • Measurements
  • Percentages and conversions
  • Military time
  • Ratios and proportions
  • Word problems
  • Algebra

Key Math Concepts and Vocabulary

• Exponent: Number of times a number is multiplied by itself.
• Expression: Mathematical sentence with constants and variables.
• Factor: Divides evenly into another number.
• Fraction Bar: Line between numerator and denominator.
• Improper Fraction: Numerator >= Denominator.
• Least Common Denominator (LCD): Smallest multiple shared by denominators.
• Constant: Number that doesn't change.
• Denominator: Bottom part of a fraction.
• Dividend: Number being divided.
• Divisor: Number dividing the dividend.
• Remainder: Portion left after division.
• Terminating Decimal: Decimal that ends.
• Variable: Letter representing an unknown quantity.

Calculations and Problem-Solving

• Use of Calculator: Basic calculator allowed; focus on accurate decimal placement.
• Manual Calculations: Helpful for verifying answers.
• Order of Operations: Keep in mind for solving expressions.

Roman Numerals

• Basics: I (1), V (5), X (10), L (50), C (100), D (500), M (1000)
• Special Cases: Smaller numeral before a larger one indicates subtraction.
• Large Numbers: Line over numeral multiplies it by 1000.

Measurements & Conversions

• Length: 1 km = 1000 m, 1 m = 100 cm, etc.
• Volume & Capacity: 1 gallon = 4 quarts, 1 cup = 8 ounces, etc.
• Weight & Mass: 1 kg = 1000 g, 1 ton = 2000 lbs, etc.
• Metric Conversion Mnemonic: King Henry Died By Drinking Chocolate Milk

Fractions

• Addition/Subtraction: Denominators must be the same.
• Multiplication: Multiply across numerators and denominators.
• Division: Invert second fraction and multiply.

Percentages

• Converting decimals and fractions to percentages by multiplying by 100.

Ratios and Proportions

• Solving proportions by cross-multiplying and dividing.

Algebra

• Order of Operations: Parentheses, Exponents, Multiplication/Division, Addition/Subtraction (PEMDAS)
• Simplifying Expressions: Combine like terms and use exponent rules.

Military Time

• AM Times: Add a zero prefix.
• PM Times: Subtract 12 from the hour.

Practice Problems and Tips

• Various examples provided in all topics to illustrate problem-solving techniques.
• Importance of understanding and applying principles accurately under exam conditions.

Conclusion

• Best wishes for exam preparation and success.
• Encouragement to engage with content for further learning.

This review covers essential concepts and strategies for achieving success in the HESI A2 math section, also applicable to similar nursing entrance exams.