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Tuesday, July 9, 2013

Portfolio Addition and Subtraction Level 3

I am learning to solve addition and subtraction using compatible at level 3.


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.
56 + 4 = 60
60 + 70 = 130
2 + 5(left from the 9) = 7
130 + 7 = 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 altogether.
36+78+203+123=?
200+120=320
80+40=120
120+320+14=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+172+148=?
70+20=90
90-5=85
150+160=310
310+85=395


4.  Petelo has $ 147 as a present.  He spent $78 at the shop.  How much has he got left?
147 - 78=?
150-80=70-5=65

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