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Mental Math, Addition, and Subtraction

The content focuses on enhancing mental math skills for GRE prep, offering strategies to efficiently perform calculations without over-relying on a calculator.
  • Emphasizes the importance of mental math in saving time during the GRE, suggesting that minimizing calculator use can prevent time crunches.
  • Introduces a method for adding and subtracting two-digit numbers by breaking them down into multiples of ten and single-digit numbers, facilitating easier mental calculations.
  • Explains a technique for simplifying subtraction when the smaller number has a larger ones digit, by adding the same amount to both numbers to keep the difference unchanged.
  • Encourages practice with these mental math tricks to build confidence and efficiency in handling quantitative sections of the GRE.
The Value of Mental Math
Adding Two-Digit Numbers
Simplifying Subtraction
Practical Application and Practice