MA.5.NSO.2.5 Multiplying Decimals by 1/10 and 1/100

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​Multiplying Decimals by 1/10 and 1/100

Some text here about the topic of discussion

​Multiplying by Place Value

​Remember place values to the left are bigger ...

Each place value to left is ten times greater and each place value to the left is ten times smaller.

Keep in mind that another way to say ten times smaller is 1/10 the size

1/10 can also be written as 0.1

The word "of" means to multiply so when you see 1/10 of 3.56 it means 1/10 x 3.56

1/10 x 3.56 = .356

Multiple Select

Select the equations that are true...

• 45 x 1 = 45

• 45 x 0.1 = 4.5

• 45 x 0.01 = .45

• 45 x 0.01 = .045

Multiple Select

Select the equations that are true.

• 4.5 x 1 = .45

• 4.5 x 1 = 4.5

• 4.5 x 0.1 = .45

• 4.5 x 0.01 = .045

Multiple Choice

What is 1/10 time 15?

• 15

• 150

• 1.5

• .15

Multiple Choice

How many dimes are in $1.50?

• 150

• 100

• 5

• 15

Multiple Choice

Which expression represents how many dimes are in $1.50.

• $$1.50\ \times\ .10\ =\ .0150$$  

• $$1.50\ \div\ .10\ =\ 15$$  

• $$1.50\ \div\ 10\ =\ 150.0$$  

• $$1.50\ x\ 10\ =\ 15.00$$  

​The Steps to multiplying decimals

Line the numbers up along the right side

Multiply as if there were no decimals

Count the number of digits to the right of the decimal points in the problem

Place a decimal point in your answer so that there are the same number of decimals to the right of the point in your answer as there are in total in the problem.

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That's all you have to do.​

Multiple Choice

solve the equation $$32\ x\ .5\ =$$  

• 160.

• .160

• 16.0

• 1.60

Multiple Choice

89 x .100 =

• 8.900

• .8900

• 89.00

• 890.0

Poll

How are you feeling about multiplying decimals by 1/10 and 1/100?

• 1

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