Mental Math: Multiples of Ten

Front

What is a multiple of ten?

Back

A multiple of ten is any number that can be expressed as ten times an integer. Examples include 10, 20, 30, etc.

Front

How do you multiply a decimal by 100?

Back

To multiply a decimal by 100, move the decimal point two places to the right. For example, 2.5 x 100 = 250.

Front

What is the result of 1200 ÷ 30?

Back

The result is 40.

Front

How do you divide a number by ten?

Back

To divide a number by ten, move the decimal point one place to the left. For example, 100 ÷ 10 = 10.

Front

What is 3000 x 600?

Back

The result is 1,800,000.

Front

How do you convert pennies to dollars?

Back

To convert pennies to dollars, divide the number of pennies by 100. For example, 2745 pennies = $27.45.

Front

What is the result of 1600 ÷ 8?

Back

The result is 200.

Front

What is the relationship between multiplication and division?

Back

Multiplication and division are inverse operations. For example, if 4 x 5 = 20, then 20 ÷ 5 = 4.

Front

What is the value of 10 x 10?

Back

The value is 100.

Front

How do you find a multiple of ten?

Back

To find a multiple of ten, multiply ten by any whole number. For example, 10 x 3 = 30.