Level 3 Addition and Subtraction

Show how you solve these number problems.  

1.  Maraea is saving to buy a cat.  In 3 weeks she has saved $9, $56 and $72.

Show how to work out how much she has saved altogether.

70+50=120

9+6+2= 17

120+17=137

2.  Tom saves his money each month to buy a dog.  In 4 months he has saved $36, $78, $203, and $123.  Show how to work out how much he has saved al together.

36+78+203+123

3+3+6+8=20

20+20=40

70+30=100

200+100=300

440+100+300=440

3.   Te Ao is saving to buy a horse.  So far she has saved $17, $160, $72, and $148.  Show how to work out how much she has saved altogether.

17+160+72+148

148-8=140

72+8=80

160+140=300

10+7+80=97

300+97= 397

4.  Petelo has $ 147 as a present.  He spent $78 at the shop.  How much has he got left?

147-78

70-40=30

100-30=70

8-7=1

70-1=69