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Evaluating One-Variable Expressions

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Evaluating One-Variable Expressions

Replace each variable with its given value, then use the order of operations. For word problems, write an expression before finding its value.

Substitute and Evaluate

Show your steps as you replace the variable and simplify.

1.Find the value of 4x + 6 when x = 5.

2.Find the value of 3y − 8 when y = 11.

3.Evaluate 7n + 2 for n = 4.

4.Evaluate 5a − 9 for a = 6.

5.Find the value of 32 − 3m when m = 7.

Expressions in Context

Write an expression for each situation, then evaluate it using the stated value.

6.Aaliyah has r beads in each of 4 small bags and 6 extra beads. Write an expression for the total number of beads. Then find the total when r = 9.

7.A skating rink charges $8 per admission plus a one-time $5 equipment fee. Write an expression for the cost of t admissions and evaluate it for t = 3.

8.A craft box holds 64 buttons. Gabriela uses b buttons. Write an expression for the number left, then evaluate it when b = 27.

More Practice

Take care to combine like terms or follow the order of operations where needed.

9.Evaluate 8p + 3p − 5 when p = 2.

10.The temperature is 68°F and then falls by d degrees. Write an expression for the new temperature and evaluate it when d = 15.

11.When x = 7, what is the value of 3x + 4?

12.Match each expression and variable value to its evaluated result.

2k + 9, when k = 6
30 − 4q, when q = 3
5w − 2, when w = 4
3v + 1, when v = 7

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About This Worksheet

Free in Kuraplan

Print-Ready

AI-Generated

For Teachers & Parents

Need a custom version of this worksheet?

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