I am learning to solve addition and subtraction at level 3.
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.
$9 +$56 + $ 72 = ? answer 137
$56 + $ 72 = 128 50 + 70 = 120 6 + 2 = 8 120 + 8 = 128
128 + 9 = 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 = ? answer : $430
So I added the 203 with 123 which equals 326 I used place value to solve this problem.
$203 + $ 123 = $326 $200 + $100 =$300 - $20 + 0 =$20 $3 + $3 = $6
$300 + $ 20 + $6 = 326 - 326 + 114 = $440
I added 36 with 78 which equals 114 I also used place value to solve this problem. Now I have to added 326 with 114.
$36 + $78 = - $70 + $30 = 100 - 6 + 8 = 14 - 100 + 14 = 114
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 + $ 72 + $160 + $148 =
$160 + $148 = 308 - 100 + 100 = $308 + $89 = 397
$17 + $72 = 89 - 10 + 70 = 80 - 7 + 2 = 9 - 80 + 9 = 89
4. Petelo has $ 147 as a present. He spent $78 at the shop. How much has he got left?
$147 - $78 = ?, 78 + ? = 147, 78 + 69 = 147
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