DS has addition homework where he has to show all his working out. this is fine for the following:
56 + 45 =
DS knew that it had to be broken down into columns of units and tens and each added up separately to get the answer.
He doesn't know how to work out:
45 + __ = 90 (and neither do I - obviously I know the mental arithmetic to get the answer but not the method used!)
it looks like the answer would be achieved by subtraction, but he is supposed to be doing addition - can anyone tell me the method please (otherwise I will ask teacher tomorrow). Thank you!
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Maths homework in Y4, help with addition homework please
19 replies
Jodee · 11/01/2009 16:47
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