Multiplying decimals
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Multiplying Decimals PowerPoint PPT Presentation


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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

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Multiplying Decimals

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Multiplying decimals

Multiplying Decimals


Example

Example:

2.7

x

3.5


Step 1

Step 1

Multiply as you normally would

27

x

35

945


Step 2

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

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.


Multiplying decimals

If your problem

had 3 digits behind a

decimal point, your

answer should have 3 digits

behind a decimal point.


Multiplying decimals

If your problem

had 4 digits behind a

decimal point, your

answer should have 4 digits

behind a decimal point.


Step 4

Step 4

Add zeros if needed.


Let s try a few together

Let’s try a few together.


Multiplying decimals

7.56 x 3.8 =

287.28

2872.8

28.728


Multiplying decimals

.3445 x 3.9 =

1.34355

13.4355

134.355


13 723 x 122 5

13.723 x 122.5 =

16.810675

168.10675

1681.0675


55 x 007

.55 x .007 =

38.5

.00385

.0385


You re correct

You’re correct!


Multiplying decimals

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.


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