Mastering Decimal Multiplication through Place Value

The video tutorial explains how to multiply decimals by converting them into fractions, performing the multiplication, and then adjusting the decimal places in the final result. It demonstrates the process step-by-step, emphasizing the importance of understanding decimal conversion and adjustment to achieve the correct product.

What is 2.91 equivalent to when expressed as a fraction?

• 2.91 divided by 100

• 2.91 divided by 10

• 291 divided by 100

• 291 divided by 10

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CCSS.4.NF.C.6

How can 3.2 be rewritten as a fraction?

• 3.2 divided by 100

• 32 divided by 100

• 3.2 divided by 10

• 32 divided by 10

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CCSS.4.NF.C.6

What is the result of multiplying 291 by 32?

• 9,312

• 8,912

• 9,132

• 8,132

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CCSS.5.NBT.B.5

What is the first step in multiplying 291 by 32?

• Multiply 2 by 1

• Multiply 2 by 9

• Multiply 2 by 2

• Multiply 3 by 1

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CCSS.5.NBT.B.5

Why do we add a zero when multiplying by 3 in 291 times 32?

• To make the calculation easier

• Because 3 is in the units place

• To avoid carrying over

• Because 3 is in the tens place

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CCSS.4.NBT.B.5

How do you convert 9,312 to a decimal by dividing by 1,000?

• 0.9312

• 93.12

• 931.2

• 9.312

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CCSS.5.NBT.A.2

What is the purpose of dividing by 1,000 in the final step?

• To adjust the decimal places

• To convert the product to a fraction

• To simplify the multiplication

• To make the number smaller

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CCSS.5.NBT.B.7

How many decimal places are there in the final product of 2.91 times 3.2?

• Four

• One

• Two

• Three

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CCSS.6.NS.B.3

How many total numbers are behind the decimal in the original expression 2.91 times 3.2?

• One

• Two

• Four

• Three

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CCSS.6.NS.B.3

What does dividing by 100 and then by 10 account for in the decimal places?

• Two decimal places

• Four decimal places

• One decimal place

• Three decimal places

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CCSS.5.NBT.A.2