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Crossing the 10.


With today's lesson, we will be using a number line to help us to cross the ten when adding.



45 + 8 =


so we split this up in to two small sums. For the first one we use our number bond knowledge to get to the next multiple of ten.


45 + 5 = 50


 now we are at 50 we need to add the 3 to get to our answer which is 53.


Choose the tricky, trickier or trickiest challenge in the document below.