percentage of an amount (1) - newtown primary school · 2021. 1. 28. · follow the steps to finda...
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Percentage of an amount (1)
1 Matchtheequivalentfractionstothepercentages.
12
25%
1100
1%
110
50%
14
10%
2 Matcheachbarmodeltothestatementitrepresents.40
?
10%of40
40
?
25%of40
40
?
50%of40
Compareanswerswithapartner.
3 Usethebarmodelstohelpyoucompletethecalculations.
a)
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
?
624
50%of624=
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
?
624
25%of624=
Whatdoyounoticeaboutyouranswers?
b) Usebarmodelstocompletethecalculations.
50%of3,420=
©WhiteRoseMaths2019
25%of3,420=
10%of3,420=
4 Completethecalculations.
a) 50%of3,000= c) 10%of3,000=
50%of1,500= 10%of1,500=
50%of500= 10%of500=
b) 25%of3,000= d) 1%of3,000=
25%of1,500= 1%of1,500=
25%of500= 1%of500=
Whatdoyounoticeaboutyouranswers?
©WhiteRoseMaths2019
5 Workersinatoyfactoryaimtopack2,560boxeseachday.
At10:00amtheyhavecompleted25%oftheirtarget.
a) Howmanyboxeshavetheypacked?
Bymiddaytheyhavepacked50%oftheirtarget.
At2:00pmtheyhavepackedanother10%oftheirtarget.
b) Howmanymoreboxesdotheyneedtopacktomeetthedaily
target?
Theyneedtopack moreboxes.
6 Followthestepstofindawaythroughthemaze.
Find20%START
2,000Find25% ×10 –600
Find
10%
Find
50%
Find
1%+700
Find
50%×5
Find
10%
Add
1,000Double
Find
1%–100
–500Find
25%Double ×10
Find
1%
Double +800Find
1%
Find
50%
FINISH
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