Addition and Subtraction Facts up to 10 - 1Subtraction reverses addition sums (Subtraction is the inverse of addition) - look at this example:
8 + 1 = 9 9 - 1 = 8Type in the correct answer to these addition sums.0 + 9 =
5 + 4 =
1 + 8 =
6 + 3 =
2 + 7 =
7 + 2 =
3 + 6 =
8 + 1 =
4 + 5 =
9 + 0 =
What do you notice about the pattern of the answers?
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