Which Two Inverse Operations Take You Back to the Original Number?

In this worksheet, we will learn how to decide which two inverse operations will take you back to your original number

Remember the inverse of an operation is what you must do to take you back to your original number.

So, the inverse of addition is subtraction, and vice versa; the inverse of multiplication is division and vice versa.

Example

Work out the following and check using inverse operations:

(72 + 57) × 12 = __________

Answer

(72 + 57) × 12 = 1548

The check for this, using the two inverse operations, is as follows:

1548 ÷ 12 - 57 = 72