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Basic Econ Math Review
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PERCENTAGES
Converting between Fractions Decimals andPercentages
Finding a Percentage
Proit ! "oss
Reverse Percentages#riting as a Percentage
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C$N%ERT&NG BET#EEN F' D ! P
Converting a (ercentage )*+,- to a raction
*+, means *+ o.t o ever/ 0++
Don1t orget to sim(li/ i (ossible
100
40
23
=
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C$N%ERT&NG BET#EEN F' D ! P
Converting a (ercentage )45,- to a decimal45, means i6e6 45 0++
Remember b/ 0++ 7
So,67% = 0.67
0++
45
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C$N%ERT&NG BET#EEN F' D ! P
Converting a decimal )6*8- to a (ercentage
Reverse the (rocess i6e6 M.lti(l/ b/ 0++ )6*8-
So, 0.43 = 43%
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C$N%ERT&NG BET#EEN F' D ! P
Converting a raction )892- to a (ercentage
Convert to a decimal irst then to a (ercentagei6e6
Then' change to a (ercentage' : b/ 0++
So, = 0.6 = 60%
28 46+++682=
2
8
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Remember 0+, ;
To ind we divide b/ 0+
Also 0, ;
And to ind we divide b/ 0++
F&ND&NG A PERCENTAGE 03+
;66 boys
Find 3?, o 4@+
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PR$F&T ! "$SS
3 t/(es o .estions
T/(e 0