Tell a number story and ask your child to draw it.
I bought 10 doughnuts in the shop….then I ate 3 of them. How many were left?
Are we adding or subtracting? Do you need to draw more take some away? What happens if you take one away? 2 away? 3 away? We have 7 left because 7=10-3 and 10-3 =7