Exponential Growth and Decay Worksheets

Free printable worksheets with answer keys. Pick a level, preview the questions, then open the sheet to swap or delete any single question.

Algebra 1CCSS HSF.LE.A.2Answer key includedPDF · Print

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Easy: Evaluate a·bˣ

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Worksheet variations

In y = a·bˣ, a is the starting value and b is the factor it is multiplied by each step. A growth of r% gives b = 1 + r/100; a decay of r% gives b = 1 − r/100.

EasyEvaluate a·bˣ MediumPercent growth HardPercent decay

How to solve it: a worked example

Evaluate each exponential function, or solve the problem. Round where it says to.

Start
Substitute
Powers first
Then
Answer

Common mistakes to watch for

Multiplying a and b before raising to the power: 3·2⁴ is 3·16 = 48, not 6⁴.
Using r instead of 1 + r as the growth factor.
Subtracting the percent once instead of multiplying by the decay factor each year.

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