Dividing by Decimals Concepts

The video tutorial explains how to divide whole numbers by decimals, specifically focusing on dividing by tenths and hundredths. It begins with an example of dividing 8 by 0.4, demonstrating how to convert the division into a fraction and eliminate decimals by multiplying both the numerator and denominator by 10. The tutorial then presents an alternative method for the same problem. The second part of the video covers dividing 48 by 0.24, using a similar approach by converting the numbers into hundredths. The video emphasizes understanding the conversion of whole numbers into tenths and hundredths to simplify division by decimals.

What is the first step in solving 8 divided by 0.4?

• Subtract 0.4 from 8

• Multiply 8 by 0.4

• Add 0.4 to 8

• Convert 8 to tenths

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CCSS.5.NBT.A.2

How many tenths are there in 8?

• 0.8 tenths

• 8 tenths

• 80 tenths

• 800 tenths

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CCSS.5.NBT.B.7

What is the result of 8 divided by 0.4?

• 2

• 20

• 200

• 0.2

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CCSS.5.NBT.B.7

What is an alternative way to solve 8 divided by 0.4?

• Multiply both numerator and denominator by 10

• Divide both numerator and denominator by 10

• Add 10 to both numerator and denominator

• Subtract 10 from both numerator and denominator

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CCSS.5.NBT.B.7

What is the first step in solving 48 divided by 0.24?

• Add 0.24 to 48

• Convert 48 to hundredths

• Multiply 48 by 0.24

• Subtract 0.24 from 48

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CCSS.4.NF.C.6

How many hundredths are there in 48?

• 0.48 hundredths

• 4800 hundredths

• 480 hundredths

• 48 hundredths

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What is the result of 48 divided by 0.24?

• 0.2

• 200

• 20

• 2

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CCSS.5.NBT.B.7

What is the alternative method for solving 48 divided by 0.24?

• Divide both numerator and denominator by 100

• Subtract 100 from both numerator and denominator

• Add 100 to both numerator and denominator

• Multiply both numerator and denominator by 100

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CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

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What is the purpose of multiplying the numerator and denominator by the same number?

• To eliminate decimals

• To change the value of the fraction

• To make the fraction larger

• To simplify the fraction

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CCSS.5.NBT.B.7

What is the key concept in dividing by decimals?

• Converting to whole numbers

• Adding decimals

• Subtracting decimals

• Multiplying decimals

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CCSS.5.NBT.B.7