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## Basic Math Skills for SAT and ACT

Below is a running list of topics. Please enter in the Comments Section what other basic math topics might help your students before SAT or ACT tutoring.

• Number properties

• Multiplying and dividing negative numbers

• Converting mixed numbers to improper fractions and vice versa

• Adding and subtracting fractions with same denominator

• Adding and subtracting fractions with different denominators

• Multiplying fractions

• Dividing fractions

• Adding, subtracting, multiplying, and dividing decimals

• Converting fractions to decimal and vice versa

• Converting percent to decimal

• Simplifying ratios

• Lowest common multiple

• Factorization

• Square and square root

## Table of Contents

Ela Sharma Book Table of Contents
.pdf
Download PDF • 161KB

## Section 10 - Exponents and Exponential Functions (Edition 2)

Category 48 Example 1 - mental math

Only in answer choice B n increases 3 times with every 0.5 increase of m. In all other answer choices the increase is same each time.

Category 49 Example 1 - mental math

Since the exponential decrease is by 7% during each time interval, x = 0.93. Since the decrease is every 3 years, in 15 years there will be 5 decreases. Hence, t = 5. Match the values of x and t with the answer choices.

Category 49 Example 2 Question 1 - mental math

Since the increase is by 2% each year than the preceding year, x = 1.02. Match it with the answer choices.

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