Practice Inverse Operations in Math

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

Operations that undo each other: addition undoes subtraction, multiplication undoes division, and vice versa. Applying an operation followed by its inverse returns you to the starting value.

Adding 5 then subtracting 5 brings you back to where you started.

Example 1

easy
Show that adding and subtracting the same number leaves you where you started: start with 15, add 8, then subtract 8. What do you get?

Example 2

medium
You start with a mystery number. You multiply it by 6 and get 54. Use the inverse operation to find the mystery number.

Example 3

easy
Start with 20. Subtract 7, then add 7. What is the result? What property does this show?

Example 4

medium
A number divided by 4 equals 8. What is the number? Use inverse operations.
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