DECIMAL S
MULTIPLYING BY 10, 100 AND 1000
DECIMAL S
MULTIPLYING BY 10
DECIMALS
0.9 X 10 = 9 X 10 10
= 9 0.12 X 10 = 12 X 10 100
= 1.2
DECIMALS
5.6 X 10 =
= 9.21 X 10
6 5 X 10 10 56 10
X 10 = 56
21 =9 X 10 100
921 = 100 X 10
= 92.1
DECIMALS
7.1 X 10 = 7 1
X 10 10 = 71
0.54 X 10 = 54 X 10 100
= 5.4
DECIMALS
Did you notice that when you multiply a number by 10, a short cut to get the answer is to shift the decimal point 1 place to the right.
Example:
5 12 X 10 = 5 1 2
PRACTICE
1. 3. 6 X 10 36 = 10.2 2. 1. 02 X 10 9.6 = 5.4 3. 0. 96 X 10 52.3 =
DECIMAL S
MULTIPLYING BY 100
DECIMALS
7 0.7 X 100 = X 100 10
= 70 12 0.12 X 100 = X 100 100
= 12
DECIMALS
2.3 X 100 = 2 3 X 100 10 = 1.42 X
23 10
X 100 = 230
42 100 = 1 X 100 100 142 = 100 X 100 =
142
DECIMALS
5.9 X 100 = 5 9 X 100 10 = 7.04 X
59 10
X 100 = 590
4 100 = 7 X 100 100 704 = 100 X 100 =
704
DECIMALS
Did you notice that when you multiply a number by 100, a short cut to get the answer is to shift the decimal point 2 places to the right.
Example:
5 12 X 100 = 5 1 2 0
PRACTICE
1. 6. 1 X 100 610 =
2. 7. 25 X 100 = 725 3. 0. 29 X 100 29 = 820 4. 8. 2 X 100 = 5. 4. 67 X 100 467 =
DECIMAL S
MULTIPLYING BY 1000
DECIMALS
6 0.6 X 1000 = X 1000 10
= 600 25 0.25 X 1000 = 100 X 1000
= 250
DECIMALS
7.8 X 1000 = 7 8 X 1000 10 = 3.09 X
78 10
X 1000 = 7800
9 1000 = 3 X 1000 100 309 = 100 X 1000 =
309
DECIMALS
4 8.4 X 1000 = 8 10 X 1000 84 = X 1000 = 8400 10 52 6.52 X 1000 = 6 X 1000 100 652 = 100 X 1000 = 6520
DECIMALS
Did you notice that when you multiply a number by 1000, a short cut to get the answer is to shift the decimal point 2 places to the right.
Example:
5 12 X 1000 = 5 1 2 0 0
PRACTICE
1. 0. 01 X 1000 10 = 3470 2. 3. 47 X 1000 = 800 3. 0. 8 X 1000 = 21 500 4. 21. 5 X 1000 = 16 030
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