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.

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What is the order of operations?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed. The acronym PEMDAS helps remember the order: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

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5

Front

What are factors?

Back

Factors are numbers that can be multiplied together to get another number. For example, the factors of 18 are 1, 2, 3, 6, 9, and 18.

Front

Identify the factors of 18.

Back

1, 2, 3, 6, 9, 18

Front

What is the base in an exponent?

Back

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What is the exponent in an exponent?

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Division.

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5

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.