Dividing Decimals and Long Division

The video tutorial covers long division with decimals through three examples. It begins with dividing 34.5 by 15, explaining the steps of division, multiplication, subtraction, and bringing down numbers. The second example involves dividing 145.6 by 2.6, demonstrating how to handle decimals in the divisor by shifting them. The final example tackles a larger number, 3805.84 divided by 45.2, reinforcing the process of adjusting decimals and performing division. The tutorial emphasizes the importance of maintaining decimal accuracy throughout the calculations.

What is the first step in the long division process when dividing 34.5 by 15?

• Multiply the numbers

• Subtract the numbers

• Divide the numbers

• Add the numbers

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CCSS.7.NS.A.2B

Why do we not divide 15 into 3 in the example of 34.5 divided by 15?

• Because 3 is a decimal

• Because 3 is equal to 15

• Because 3 is less than 15

• Because 3 is greater than 15

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CCSS.6.NS.B.3

What is the result of 34.5 divided by 15?

• 2.03

• 3.20

• 2.30

• 3.02

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CCSS.5.NBT.B.7

What adjustment is made to the divisor when dividing 145.6 by 2.6?

• Subtract a zero from the divisor

• Add a zero to the divisor

• Move the decimal one place to the right

• Move the decimal one place to the left

Tags

CCSS.5.NBT.B.7

After adjusting the decimal, what does 145.6 divided by 2.6 become?

• 145.6 divided by 2.6

• 1456 divided by 2.6

• 1456 divided by 26

• 145.6 divided by 26

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CCSS.5.NBT.B.7

What is the final result of 145.6 divided by 2.6?

• 56

• 65

• 5.6

• 6.5

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CCSS.7.EE.B.3

In the example of dividing 3805.84 by 45.2, what is the first step after adjusting the decimal?

• Divide the numbers

• Subtract the numbers

• Multiply the numbers

• Add the numbers

Tags

CCSS.6.NS.B.3

What is the result of dividing 3805.84 by 45.2 after adjusting the decimal?

• 8.40

• 8.04

• 8.42

• 8.24

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CCSS.5.NBT.B.6

CCSS.6.NS.B.2

What is the importance of moving the decimal point in the divisor?

• To make the division easier

• To eliminate decimals in the divisor

• To increase the divisor

• To decrease the divisor

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CCSS.5.NBT.B.6

CCSS.6.NS.B.2

What is the mnemonic used to remember the steps of long division?

• Divide, Add, Subtract, Multiply

• Dad, Mom, Sister, Brother

• Divide, Multiply, Subtract, Bring down

• Dad, Sister, Brother, Mom

Tags

CCSS.5.NBT.B.6

CCSS.6.NS.B.2