### Home > CC1MN > Chapter 9 > Lesson 9.3.1 > Problem 9-86

9-86.

Recall that inverse operations “undo” each other. Write the inverse operation for each situation below.

Addition and subtraction are inverse operations.

For example, adding 4 and then subtracting 4 takes you back to your original number.

Multiplication and divsion are also inverse operations.

For example, multiplying a number by 4 and then dividing by 4 takes you back to your original number.

Add

.

Subtract

. If subtraction and addition are inverse operations, how much do you have to add?

Divide by

. Multiply by 8.

Multiply by

. If multiplication and division are inverse operations, how much do you have to divide by?