Operations with Decimals: Division Techniques

This video tutorial explains how to divide a decimal by another decimal by converting the divisor into a whole number. It provides two examples: dividing 14.35 by 3.5 and 12.09 by 1.55, demonstrating the process of moving the decimal point in both the divisor and dividend to simplify the division. The video emphasizes the importance of aligning decimal points and provides a clear, step-by-step guide to ensure accurate results.

What is the first step when dividing a decimal by a decimal?

• Move the decimal in the divisor

• Multiply the decimals

• Move the decimal in the dividend

• Subtract the decimals

In the example of dividing 14.35 by 3.5, how many places do we move the decimal?

• Two places to the right

• One place to the right

• Two places to the left

• One place to the left

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CCSS.6.NS.B.3

After moving the decimal in both the divisor and the dividend, what is the new divisor in the example of 14.35 divided by 3.5?

• 14.35

• 35

• 3.5

• 143.5

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CCSS.5.NBT.B.7

What is the final answer when dividing 14.35 by 3.5?

• 0.41

• 4.01

• 4.1

• 41

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CCSS.6.NS.B.3

In the second example, how many times do we move the decimal point in the divisor 1.55?

• Four times

• One time

• Two times

• Three times

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CCSS.6.NS.B.3

What is the new divisor after moving the decimal in 1.55?

• 12.09

• 1.55

• 155

• 15.5

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CCSS.5.NBT.B.7

How many times does 155 go into 1209 in the second example?

• 6 times

• 7 times

• 8 times

• 9 times

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CCSS.4.NBT.B.6

What is the result of 7 times 155 in the second example?

• 1105

• 1095

• 1115

• 1085

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CCSS.4.NBT.B.5

What do we do if there are no more digits to bring down in a decimal division?

• Add a zero to the dividend

• Stop the division

• Subtract the divisor

• Move the decimal point

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CCSS.5.NBT.B.6

CCSS.6.NS.B.2

What is the final answer when dividing 12.09 by 1.55?

• 7.77

• 7.79

• 7.78

• 7.8

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CCSS.6.NS.B.3