## Mental Math, Addition, and Subtraction

Summary

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.

Chapters

00:09

The Value of Mental Math

01:13

Adding Two-Digit Numbers

03:23

Simplifying Subtraction

05:40

Practical Application and Practice