Multiplying and Dividing Decimals

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It uses a decimal point to separate the whole number part from the fractional part.

Front

How do you multiply decimals?

Back

To multiply decimals, multiply the numbers as if they were whole numbers. Then, count the total number of decimal places in both numbers and place the decimal point in the product accordingly.

Front

What is the rule for dividing decimals?

Back

To divide decimals, move the decimal point in the divisor to the right until it is a whole number. Move the decimal point in the dividend the same number of places. Then, divide as usual.

Front

Estimate the product of 2.5 and 4.3.

Back

Estimate by rounding: 2.5 rounds to 3 and 4.3 rounds to 4. So, 3 x 4 = 12.

Front

What is the value of 0.6 x 0.4?

Back

0.6 x 0.4 = 0.24.

Front

If you have 1.5 yards of fabric and cut it into 3 equal pieces, how much fabric is in each piece?

Back

1.5 yards ÷ 3 = 0.5 yards.

Front

What is the result of 3.2 ÷ 0.8?

Back

3.2 ÷ 0.8 = 4.

Front

How do you round 2.67 to the nearest whole number?

Back

2.67 rounds to 3 because the digit after the decimal (6) is 5 or greater.

Front

What is 0.75 multiplied by 100?

Back

0.75 x 100 = 75.

Front

If a pencil costs $0.50, how much do 10 pencils cost?

Back

$0.50 x 10 = $5.00.