Carson Elementary And Intermediate Algebra 3e Page 2
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Carson Elementary and Intermediate Algebra 3e
Section 3.2
Place value reminder:
0 .
1
2
3
4
Converting a percent to a decimal, and from a decimal to a fraction
(To use this chart, move from the RIGHT to the LEFT)
FRACTION
from
DECIMAL
from
PERCENT
read it
write it
move decimal 2 places to the left
reduce it
START HERE:
Example 1
To convert a decimal to a
To convert a percent to a
Write 64% as a decimal.
fraction, read the decimal,
decimal, move the decimal
write it as a fraction, then
two places to the left. If
reduce it. The decimal 0.64 is
there is no decimal written, it
read “sixty-four hundredths*:”
is implied to be after the
64
number.
. 0
64
100
64
%
. 0
64
Now, reduce the fraction:
64
16
100
25
Example 2
To convert a decimal to a
To convert a percent to a
Write 38% as a decimal.
fraction, read the decimal,
decimal, move the decimal
write it as a fraction, then
two places to the left.
reduce it.
38
%
. 0
38
38
19
. 0
38
100
50
Example 3
To convert a decimal to a
To convert a percent to a
Write 15.5% as a decimal.
fraction, read the decimal,
decimal, move the decimal
write it as a fraction, then
two places to the left.
reduce it.
15
5 .
%
. 0
155
The decimal 0.155 is read as
“one-hundred fifty-five
thousandths”
155
31
. 0
155
1000
200
C.Stewart 2011
page 2
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