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