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?