The strategy that I have been using to solve addition and subtraction equations is called the rounding and compensating. I have been using the splitting strategy to solve subtraction.
I learnt how to use this strategy by using the learning videos and the slide deck on the Te Manga class site. I practiced the equations until I could do it. I used my slide deck and my orange maths book for practice. I would tall a new learner to watch my video.
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