Do I need to line up decimal points when multiplying?

No. Unlike addition, ignore the decimal points while multiplying. Place the decimal in the product at the end.

How do I know how many decimal places the answer should have?

Count the total decimal places in both factors combined. The product must have that same total.

Yes. Round each factor to the nearest whole number, multiply, and compare with your precise answer.

Generate unlimited practice problems with a guaranteed-correct answer key.

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Decimal places

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Answer Key

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Name:Date:Class:

1.10

\times

2.02

=

2.15

\times

2.36

=

1.39

\times

4.93

=

1.75

\times

0.10

=

1.13

\times

2.69

=

4.99

\times

1.88

=

1.82

\times

0.79

=

4.16

\times

1.67

=

0.02

\times

138.00

=

10.

3.25

\times

0.93

=

11.

2.17

\times

4.59

=

12.

2.29

\times

0.70

=

13.

1.79

\times

2.36

=

14.

1.58

\times

4.79

=

15.

2.18

\times

1.49

=

16.

1.03

\times

6.48

=

17.

2.09

\times

0.13

=

18.

4.15

\times

1.33

=

19.

1.71

\times

2.74

=

20.

0.71

\times

11.89

=

worksheetpress.comSeed: k3n9wq

Problem: 3.7 × 2.4

Count decimal places: 1 + 1 = 2 total— Record this before starting so you do not forget.
Multiply as whole numbers: 37 × 24 = 888— Ignore decimal points for this step.
Place decimal point 2 places from the right: 8.88— 888 → 8.88.

Answer: 8.88