Multiplying Decimals

Example: 2.7 x 3.5

Step 1 Multiply as you normally would 27 x 35 945

Step 2 Count the number of digits behind a decimal point in the problem. This one has two digits behind the decimal point, the 7 and the 5. 2.7 x 3.5 =

Step 3 Put the decimal point in the answer. If your problem had 2 digits behind a decimal point, your answer should have 2 digits behind a decimal point.

If your problem had 3 digits behind a decimal point, your answer should have 3 digits behind a decimal point.

If your problem had 4 digits behind a decimal point, your answer should have 4 digits behind a decimal point.

Step 4 Add zeros if needed.

Let’s try a few together.

7.56 x 3.8 = 287.28 2872.8 28.728

.3445 x 3.9 = 1.34355 13.4355 134.355

13.723 x 122.5 = 16.810675 168.10675 1681.0675

.55 x .007 = 38.5 .00385 .0385

You’re correct!

Incorrect, try again Remember to count the digits behind the decimal points in the problem. You must have this many digits behind the decimal point in the answer.