Jamison has been saving up for a new app. He has $143 in his wallet and the game costs $129 how much will he have left over?
My first strategy is equal adjustments:
143 - 129 =
+ 1 + 1
144 - 130 = 14
My second strategy is reversibility:
143 - 129 = ?
129 + ____ = 143
129 + 1 = 130
130 + 13 = 143
1 + 13 = 14
I hope you like it, feel free to leave a comment.
I hope you like it, feel free to leave a comment.
Great job Louis the question looked quite hard, but buy using those two strategies the question got a lot more easier to solve. I hope I can see more of your magnificent works.
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