## 1.2 Learn Basic Properties and Operations

This lesson will help you learn the basic properties and rules that govern math problem-solving.

### Properties

In a multiplication problem, the numbers being multiplied are called factors. In the expression 4(9 + 2), the factors are 4 and (9 + 2). We can work backward using the distributive property to find the factors in an expression.

### Example

Which of the following expressions is equal to $$5(15) - 5(8)$$?

#### Test Tip

Equal expressions have the same value when all of the operations are completed.

A. $$(15 - 5) - (8 - 5)$$
B. $$(15 - 5) + (8 - 5)$$
C. $$5(15 - 8)$$
D. $$5(15 + 8)$$