Multiplying Decimals

​Multiplying Decimals Steps

• ​quick estimate

  ​

• stack the numbers WITHOUT the decimals

  ​

• multiply carefully to find the answer (product)

  ​

• PLACE THE DECIMAL in the product (depending on the spaces in both factors)

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Fill in the Blank

When multiplying factors, the answer is called the

Open Ended

TABLE problem:

Where does the decimal go in the product? How do you know?

Multiple Choice

Practice

Which is the correct product?

2.345 x 9 = 21105

• 2.1105

• 211.05

• 2110.5

• 21.105

Multiple Choice

Practice

Which is the correct product?

2.612 x 3.4 =

• 904.32

• 9.0432

• 9043.2

• 90.432

Fill in the Blank

The numbers you multiply to get the product are called

Multiple Choice

Practice

Find the product

6.4 * 3.2 =

• 204.8

• 20.48

• 1.28

• 18.22

Multiple Select

Which of these symbols mean multiplication?

• *

• ( )

• #

• X

Multiple Choice

Practice

Find the product

6.253 * 4 =

• 2041.2

• 12.120

• 24.822

• 25.012

Multiple Choice

5.35 * 9 = 4815

Where in the product should the decimal point be placed?

• 4815.0

• 481.5

• 48.15

• 4.815

Multiple Choice

The place value stays the same if you move the decimal point.

• False

• True

Multiple Choice

When multiplying 27.98 × 3.5

how many times would you move the decimal in the product?

• 1

• 2

• 3

• 4

Multiple Choice

2.356 * 4 =

Where in the product should the decimal point be placed?

• 9.424

• 942.4

• 94.24

• 0.09424

Multiple Choice

What is another way to write 9 x 8 = 72

• 9 + 8 = 72

• 9 > 8

• 9 ( 8 ) = 72

• 9 / 8 = 72

Open Ended

Oliver bought 7 bags of candy. Each bag costs $1.50. How much money did he have to pay?

Poll

How do you feel about multiplying decimals?

• I need more practice.

• I know how to multiply with decimals.

• I get stuck on my multiplication facts.

• I think adding and subtracting decimals is easier than multiplication.