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7-86.

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

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.

  1. Add .

  1. Subtract .

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

  1. Divide by .

    Multiply by 8.

  1. Multiply by .

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