This week in Maths we have been adding and subtracting a two digit number and ones. To help us we draw our tens and ones. A ten is drawn as a stick and a one is drawn as a dot. Could you re-cap this at home? To add we simply draw more tens or ones and to subtract we cross them out. If we do not have enough ones to cross out, we must 'exchange' a ten by crossing it out and drawing ten more ones.
Can you re-cap this at home?
45- 7 =
23 + 4 =
29 + 6 =
54 - 5 =
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