Casio FX-82AU PLUS Calculator User Manual


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22
Working with fractions
Practisethecalculatorfractionsskillsoutlinedonpages 6and7withthefollowing
questionsthatinvolvefractions.Remember tousetheroundreplaybuttontopositionthe
cursorcorrectlywhenyouareusingMathIO.
1. Evaluate
1 3
2 4
+
andexpressyouranswerasamixednumeral,improperfraction
andadecimal.
2. Express
7 2
8 5
´
asafraction.
3. Writethevalueof
1 4
3 5
1 -
asafraction.
4. Evaluate
9 3
10 5
1 ´ andexpressyouranswerasanimproperfraction.
5. Writetheanswerto
3 1
8 4
1 2 ´
asamixednumeral.
6. Findthevalueof
31
2 5
3 2 ¸
andexpressthevalueasanimproperfraction.
7. Calculate
7 3
10 5
3 5 + .Writeyouranswerasamixednumeral.
8. Findthevalueof
2
3
5
( )
.Writeyouranswerasafractionandasadecimal.
9. Calculatethevalueof
9
16
1 andexpressyouranswerasanimproperfraction.
10. Evaluate
3 1 1
4 2 2
2 1 + ´
.Expressyouranswerasamixednumeral.
11. Findadecimalvaluefor
4 2 4
5 5 5
1 5 + ¸
.
12.Theu buttonproducesthereciprocalofafraction.Enter
2
5
uandrecordthe
reciprocalof
2
5
asanimproperfractionandamixednumeral.
13.Whatisthereciprocalof
5
9
?Expressyouranswerasamixednumeral.
14.Writethereciprocalof
1
2
3
asafraction.
15.Whatisthevalueof
3
5
multipliedbythereciprocalof
3
5
?
Answers
1
1
4
1
,
5
4
,1.25 2
7
20
3
8
15
4
36
25
5
3
32
3
6
35
26
7
3
10
9
8
9
25
,0.36 9
5
4
10
1
2
3
118.55 12
5
2
,
1
2
2
13
4
5
1
14
2
7
151
©SueThomsonandShriroAustralia PTYLimited.Thispagemaybephotocopiedforclassroomuse.
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