Multiplying and Dividing Decimals

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

Front

How do you multiply a decimal by a whole number?

Back

To multiply a decimal by a whole number, multiply as if there were no decimal, then place the decimal point in the product based on the number of decimal places in the original decimal.

Front

What is the product of 2.5 and 4?

Back

The product of 2.5 and 4 is 10.

Front

How do you divide a decimal by a whole number?

Back

To divide a decimal by a whole number, divide as if there were no decimal, then place the decimal point in the quotient directly above the decimal point in the dividend.

Front

What is 0.75 ÷ 3?

Back

0.75 ÷ 3 = 0.25.

Front

What is the first step in multiplying decimals?

Back

The first step in multiplying decimals is to ignore the decimal points and multiply the numbers as if they were whole numbers.

Front

What is 3.6 x 2?

Back

3.6 x 2 = 7.2.

Front

How do you determine the placement of the decimal point in the product of two decimals?

Back

Count the total number of decimal places in both factors. The decimal point in the product is placed so that there are that many decimal places.

Front

What is 0.5 x 0.2?

Back

0.5 x 0.2 = 0.1.

Front

What is 1.2 ÷ 0.4?

Back

1.2 ÷ 0.4 = 3.