Tuesday 10 March 2020

Serious Subtraction

  Serious Subtraction
We are learning to solve subtraction problems using whole and decimal numbers.

Times Table Practice:

3 x 3 = 9     5 x 5 = 25 8 x 7 = 56   12 x 10 = 120 4 x 6 = 24   5 x 7 = 35 2 x 4 =8 3 x 8 = 24   9 x 8 = 72 4 x 7 = 28 9 x 7 = 63

345 + 385 = 730
300+300=600
45+80=125+5=130+600=730

847 + 126 = 973
47+26=73
800+100=900+73=973

674 + 586 = 1260
604+506=1110
70+80=150+1110=1260

Your sister gives you $125 to spend on lollies. If you spend $65 how much money would you have left over?
125-65=60
125-25=100-40=60
She then gives you $234 more. How much money do you have now?
60+234=294
34+60=94+200=294
Pt England school are buying new sports gear. There is $500 in the sports budget. 

They first purchase a basketball hoop for $50. How much money does it leave?
500-50=450
100-50=50+400=450
They then buy a net for $25.  How much do they have left?
450-25=425
50-25=25+400=425
Then they buy three tennis balls. Each ball costs $3. How much do they have left?
425-9=416
3x3=9
25-9=16+400=416
Finally they buy a netball hoop which costs $100.  How much is left in the budget at the end?
416-100=316
Troy has $100 in his wallet. He spends $65.50 on a new PS4 game. How much money does he have left?
100-65.50=34.50
100-65=35-0.50(0.5)=34.5(0)
Kahurangi wins some money and goes on a shopping spree.If he has 10.80 left in his bank account and he started with $525.80, how much did he spend?
525.80-515=10.80
10.80+515=525.80
525-500=25+0.80=25.80-15=10.80
500+15=515
Zyla’s puppy is growing every month. He used to weigh 5.6 kg but he now weighs 6.3. How much weight has he put on?
5.6+0.7=6.3
5.6+0.4=6+0.3=6.3

0.4+0.3=0.7

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