Math 5.5 Inverse Operations

Front

What are inverse operations?

Back

Inverse operations are pairs of mathematical operations that undo each other. For example, addition and subtraction are inverse operations, as are multiplication and division.

Front

What is a fact family?

Back

A fact family is a group of related addition and subtraction or multiplication and division facts that use the same numbers.

Front

Write the fact family for 5 x 9 = 45.

Back

5 x 9 = 45, 9 x 5 = 45, 45 ÷ 9 = 5, 45 ÷ 5 = 9.

Front

If Tia has $35 and each pair of socks costs $5, how many pairs can she buy?

Back

Tia can buy 7 pairs of socks.

Front

What is the result of 3 x 3?

Back

3 x 3 = 9.

Front

What is the inverse operation of multiplication?

Back

The inverse operation of multiplication is division.

Front

If 🟦 x 2 = 8, what is 🟦?

Back

🟦 = 4.

Front

If 🟥 ÷ 4 = 2, what is 🟥?

Back

🟥 = 8.

Front

What is the total cost of 5 movie tickets if each ticket costs $6?

Back

The total cost is $30.

Front

What is the inverse operation of addition?

Back

The inverse operation of addition is subtraction.