Understanding Division by Powers of Ten

This video tutorial explains how to divide numbers by powers of ten using a shortcut method. It demonstrates how multiplying by ten shifts the decimal point to the right, while dividing by ten shifts it to the left. The video provides examples of these operations, showing how to divide 99.061 by 100 by shifting the decimal point two places to the left, resulting in 0.99061. The tutorial emphasizes understanding the movement of the decimal point when multiplying or dividing by powers of ten.

What method was used in the previous video to divide 100 by 99.061?

• Estimation

• Long division

• Using a calculator

• Multiplication

Tags

CCSS.5.NBT.A.2

What happens to the decimal point when you multiply a number by 10?

• It disappears

• It moves to the right by one spot

• It stays in the same place

• It moves to the left by one spot

Tags

CCSS.5.NBT.A.2

If you divide 99.061 by 10, what is the result?

• 99.061

• 990.61

• 9.9061

• 0.99061

Tags

CCSS.5.NBT.A.2

How many times do you shift the decimal point when dividing by 100?

• Once to the right

• Twice to the left

• Once to the left

• Twice to the right

Tags

CCSS.5.NBT.A.2

What is the result of dividing 99.061 by 100?

• 990.61

• 9.9061

• 0.99061

• 99.061

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CCSS.5.NBT.A.3A

Why might you add a leading zero when writing 0.99061?

• To make it look larger

• To make it easier to read

• To change its value

• To make it a whole number

Tags

CCSS.5.NBT.A.2

What is the effect of dividing a number by a power of ten?

• The decimal point shifts to the right

• The number becomes negative

• The decimal point shifts to the left

• The number becomes larger

Tags

CCSS.5.NBT.A.2