*NOTE: Although 100 may be divided into 25, it is best to reduce the fraction 25/100
to 1/4 and then divide.
___
1/4 = 4/1.0 = 0.25
Answers: (1) 0.125,
(2) 0.75,
(3) 0.25,
(4) 0.0002
1-14. MULTIPLYING A DECIMAL BY A NUMBER THAT IS A MULTIPLE OF 10
a. If a decimal is to be multiplied by a number that is a multiple of ten (10, 100,
1000, and so forth), move the decimal point as many places to the RIGHT as there are
zeros in the multiplier.
b. For example: When multiplying 0.2 times 100, move the decimal point one
place to the RIGHT for each of the zeros in the multiplier. There are two zeros,
therefore the decimal must be moved two places to the right.
Examples:
(1)
0.6 x 10 =
6
(4)
6.75 x 10
=
67.5
(2)
0.6 x 100 =
60
(5)
6.75 x 100
=
675
(3)
0.6 x 1000 =
600
(6)
6.75 x 1000
= 6750
c.
Work the following:
(1)
0.08 x
100
=_______
(7)
3.68
x
10
= ______
(2)
0.08 x
1000 =_______
(8)
0.02
x
100 = _______
(3)
0.75 x
10
=_______
(9)
164.6 x 1000 = _______
(4)
0.043 x
100
=_______
(10)
64.8
x
100 = _______
(5)
14.6 x
1000 =_______
(11)
0.0042 x
10 = _______
(6)
0.14 x
100
=_______
(12)
40
x 10,000 = _______
Answers: (1) 8
(4) 4.3
(7) 36.8
(10) 6,480
(2) 80
(5) 14,600
(8) 2
(11) 0.042
(3) 7.5
(6) 14
(9) 164,600 (12) 400,000
MD0802
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