  # Substituting Negative Numbers

In this worksheet, students substitute negative numbers into algebraic expressions. Key stage:  KS 3

Curriculum topic:   Algebra

Curriculum subtopic:   Understand Expressions, Equations, Inequalities, Terms and Factors

Difficulty level:   #### Worksheet Overview

In this worksheet, we will learn how to substitute negative numbers.

Substitute the negative numbers into the expressions instead of the letter.

Example

Evaluate
 2x+3 4x
when X = -5

 2x(-5)+3 4x(-5)
=
 -10+3 -20
=
 -7 -20
=
 7 20

Remember: Multiplying or dividing two negative numbers gives a positive answer.

Multiplying or dividing one positive and one negative number, gives a negative answer.

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