Lesson 8 dividing decimals by 10, 100, 1000, 10 000
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Math 6: Decimals Dividing Decimals by 10, 100, 1000, 10 000
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Transcript of Lesson 8 dividing decimals by 10, 100, 1000, 10 000
Math 6: DecimalsDividing Decimals by 10, 100, 1000, 10 000
Review
Multiply
2.134 x 10 0.246 x 1000 7.028 x 100
25.489 x 1000 7.89 x 100 6 x 1000
Explore
What happens to the value when you multiply?
What happens to the digits?
Explore
Use a calculator to calculate the following and put it in a place-value chart:
7/10 2.4/10 15.63/10
7/100 2.4/100 15.63/100
7/1000 2.4/1000 15.63/1000
Place Value Chart T.T. T H T O Decimal T H T
Dividing by 10
When you divide a decimal by 10, the decimal point moves one place to the left. Only one 0.
(Think: number becomes smaller)
Ex. 5.6/ 10 = 0.56
Dividing by 100
When you divide a decimal by 100, the decimal point moves two places to the left. There are two 0 in 100.
Ex. 5.6/100 = 0.056
Dividing by 1000
When you divide a decimal by 1000, the decimal point moves three places to the left. There are three 0 in 1000.
Ex. 5.6/1000 = 0.0056
Dividing by 10 000
When you divide a decimal by 10 000, the decimal point moves four places to the left. There are four 0 in 10 000.
Ex. 5.6/10 000 =0.00056
Mental Math
Complete these to solve each quotient.
What does quotient mean?
0.23/10 9/100 1.16/1000
12/1000 8.57/103.854/100
In Class Work
pg. 141-142 - # 1-6 and 9
Homework
pg. 58 + 59
