Casio FX-82AU PLUS Calculator User Manual


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21
Percentages
1 Thescreenshotshowsthecalculatorconverting25%toafraction.
Enter25%bypressing25SHIFT(followedby ptocheckthevalueof
25%asafraction.
2 Expresseachpercentageasafraction.
A50% B 75% C 40% D 5% E 100%
F200% G
1
2
% H 1.5% I
1
4
% J 35%
3 Expresseachpercentageasadecimal.
Hint! Expressthepercentageasafractionthenpressthenbutton.
A 45% B 79% C 5% D 7.5% E
1
2
2
%
F 245% G 1000% H 1% I 120.5% J
1
11
2
%
4 Thescreenshotshowsthesolutiontotheproblem‘Increase40by10%’.
Checkthecalculationbypressing40+10SHIFT(O40p.
Determinethefollowingamounts.
A Increase60by10%.
B Increase75by25%.
C Decrease80by20%. (Hint!Rememberdecreasemeansmakesmaller.)
D Decrease$120by30%.
E Increase$90by25%thendecreasetheresultby25%.
5 Thelocalsportsstoreishavinga‘15%offsale’.Gillianisgoingtobuyapairof
runningshoesthatnormally cost$165.Howmuchwilltherunningshoescostin
the‘15%offsale’?
Answers
2A
1
2
B
3
4
C
2
5
D
1
20
E1 F 2 G
1
200
H
3
200
I
1
400
J
7
20
3A 0.45 B0.79 C0.05 D 0.075 E0.025 F 2.45 G10 H 0.01 I 1.205 J 0.115
4A 66 B 93.75 C 64 D $84 E 84.375
5 $140.25
©SueThomsonandShriroAustraliaPTYLimited.Thispagemaybephotocopiedforclassroomuse.
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