Multiplying Decimals Review

How do you know where you put the decimal in a multiplication problem?

• line it up and bring it down

• move it up

• count the digits behind the decimal and move it the same amount of spaces.

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0.3 x 0.5

• 0.15

• 1.5

• 15

• 0.8

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1.2 x 2.1

• 2.53

• 2.52

• 25.2

• 0.25

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2.5 x 6.7

• 16.7

• 0.167

• 16.75

• 167.5

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0.6 x 0.91

• 54.6

• 6.36

• 0.546

• 0.636

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45.1 x 7

• 2835.7

• 315.7

• 378.7

• 31.57

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Where would the decimal go in this problem?

22.2 x 0.44 = 9768

• 97.68

• 0.9768

• 9.768

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Where would the decimal go in this problem?

6.98x5= 349

• 34.9

• 3.49

• 0.349

• 349

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Credit cards are 0.76 mm thick. How thick is a stack of 1,000 credit cards piled one on top of the other?

• 760 mm

• 76 mm

• 0.076 mm

• 0.00076 mm

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Hectors dog Obie has 6 puppies. Each puppy eats 0.16 pounds of dog food every day. How many pounds of dog food do the puppies eat in 1 day?

• 6.36 lb

• 0.76 lb

• 0.96 lb

• 6.16 lb

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