Multiply Decimals

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a dot (decimal point) separating the whole number 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 move the decimal point in the product to the left by that total.

Front

When multiplying 17.98 × 143.5, how many times do you move the decimal in the product?

Back

3 times to the left.

Front

If you multiply 0.73 by 2.52, how many times do you move the decimal in the product?

Back

4 times to the left.

Front

What is the product of 2.5 and 6.20?

Back

$15.50.

Front

How do you find the area of a rectangle?

Back

Multiply the length by the width.

Front

What is the area of a garden that is 9.87 meters long and 1.9 meters wide?

Back

18.753 m².

Front

If Joanne weighs 102 pounds and her father weighs 2.2 times as much, how much does her father weigh?

Back

224.4 pounds.

Front

What is the first step in multiplying decimals?

Back

Ignore the decimal points and multiply the numbers as if they were whole numbers.

Front

How do you determine where to place the decimal in the product of two decimals?

Back

Count the total number of decimal places in both factors and move the decimal point in the product to the left by that total.