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Mental Math, Addition, and Subtraction
Mental Math, Addition, and Subtraction
6 minutes
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Arithmetic and Fractions
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