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Wednesday 19 June 2013

Don't Subtract Add

We were learning to add numbers while subtracting.
Complete the answers below. Remember to show your thinking



  1. Moana has $81 and she gives her friend $18. How much money does Moana have left?
18 + 2 = 20
20 + 60 = 80
80 + 1 = 81
       18 + 63 = 81 so 81 - 18 = 63
  1. Jake collected $75 from his pocket money to buy a present for his mum. The present only costs $39 so how much change does he have?
                                 39+1=40
40+30=70  
70+5=75
 39+36=75 so 75-39=63  
  1. Dad takes $93 with him to the fair. He comes back with $57. How much did he spend?
57+3=60
40+80=120
90+3=93
50+7=57
=36

  1. At the park the lolly seller has collected in $103.
     She has to pay $88 out for buying lollies for the               next day. How much money does she have left?
93-36=36
  1. Sam has $110 and spends $89 on some playstation games he wanted. How much money does he have left? 110-89= 21
  2. I start shopping with $64 and come home with $38. How much did I spend when I was out shopping?  64-38=24
  1. I wanted to collect $100 for charity, but only managed to get $82. How much less than $100 is that? 100-82=18
The hard part for me was not being able to use the number line to help me answer the question. 7


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