This week we have been looking at addition and subtraction, we have been practicing our number bonds so that we can quickly and confidently add on and subtract single digit numbers. We have also been looking at how we can use our knowledge of 10s and 1s to help us add and subtract two digit numbers. Using a hundred square to help children add on 10 by jumping down a square, subtracting 10 by jumping up a square, add on 1 by jumping one square to the right and subtracting 1 by jumping one square to the left. Using this method the children can quickly add or subtract 2 digit numbers. For example 63-27=Start at 63 on the 100 square, jump up 2 squares to subtract 20, then jump left 7 squares (you will have to go into the line above, but keep moving left).
If your child is able to add and subtract two digit number quickly and efficiently in their heads, you might like to add another level of difficulty by giving them some two step problems to solve:
Jane went to the shop with £1, she spent 43p on a drink and 38p on some sweets. How much money did she come home with?
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