Review for Chapter 1 Test Numerical Expressions & Factors

Front

What is a numerical expression?

Back

A numerical expression is a mathematical phrase that includes numbers and operations (like addition, subtraction, multiplication, and division) but does not have an equal sign.

Front

What does it mean to evaluate a numerical expression?

Back

To evaluate a numerical expression means to calculate its value by performing the operations in the correct order.

Front

What is the order of operations?

Back

The order of operations is a set of rules that tells you the sequence to follow when evaluating expressions: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). This is often remembered by the acronym PEMDAS.

Front

Calculate: 6^3 – 10 ÷ 5

Back

214

Front

What are factors?

Back

Factors are numbers that can be multiplied together to get another number.

Front

List the factors of 18.

Back

1, 2, 3, 6, 9, 18

Front

What is a prime number?

Back

A prime number is a number that has only two factors: 1 and itself.

Front

Is 9 a prime number?

Back

No, 9 is not a prime number because it has more than two factors: 1, 3, and 9.

Front

What is a base in an exponent?

Back

The base is the number that is multiplied by itself when using an exponent.

Front

Identify the base in the expression 2^3 = 8.

Back

The base is 2.