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5 6 4
– 3 1 2
Subtracting decimals with the samenumber of decimal places
1 Useaplacevaluechartandcounterstohelpyoucomplete
thesubtractions.
Tens Ones Tenths Hundredths
1 1 1 1 1
1 1
a) 14.83–12.12= c)14.83–12.92=
b) 14.83–12.14= d)14.83–12.94=
e) Whichcalculationwaseasier?Talkaboutitwithapartner.
f) Whathappenswhenyoudon’thaveenoughcountersina
columntotakeaway?
2 Completethesentences.
1tencanbeexchangedfor ones.
1onecanbeexchangedfor tenths.
1tenthcanbeexchangedfor10 .
3 Annieiscalculating2.42–1.17usingthecolumnmethod.
Sheusesaplacevaluecharttohelpher.
Ones Tenths Hundredths
1 1
Howdoestheplacevaluechartsupportthecolumnmethod?
Talkaboutitwithapartner.
4 Completethecolumnsubtractions.
a) c)
b) d)
©WhiteRoseMaths2020
8 0 9
– 3 8 1
2 34 12
– 1 1 7
1 2 5
1 2 0 2
– 1 1 3 8
5 6 4
– 3 1 5
©WhiteRoseMaths2020
5 Whitneyhas£8.52
Shebuysthiscomic.
Howmuchmoneydoesshehaveleft?
£
6 Herearesomeitemsforsaleinashop.
a) Howmuchmoredoesascarfcostthanabagofmarbles?
£
b) Estherhas£15.31
Shebuysapairofheadphonesandabagofmarbles.
Howmuchmoneydoesshehaveleft?
£
c) Tomhas£7.01
Hebuysoneitemandhas£5.92left.
Whatdidhebuy?
Tombought .
7 RonandDoraaredoingasponsoredwalk.
Ronwalks3.12miles.
Dorawalks5.49miles.
HowmuchfurtherdoesDorawalkthanRon?
Dorawalks milesfurtherthanRon.
8 Tommyhasthreepiecesofstring.
• Thefirstpieceis0.78mlong.
• Thesecondpieceis0.24mshorterthanthefirstpiece.
• Thethirdpieceis0.07mshorterthanthesecondpiece.
Whatisthetotallengthofallthreepiecesofstring?
Giveyouranswerinmetresandcentimetres.
mand cm
9 A,BandCarepointsonanumberline.
100 200
A
118.76
C
186.34
B
159.72
HowmuchgreateristhedifferencebetweenAandCthanthe
differencebetweenBandC?
Comparemethodswithapartner.
£3.25
£2.27 £9.10 £4.91 £1.09