First Class maths · C.9 · Addition and Subtraction to 20
Near doubles
One number is one more or one less than the other. Use a double you know.
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See worked examples
Lia wonders: 2 + 3 =
Answer: 5
Jon asks: 3 + 4 =
Answer: 7
Lia thinks: 3 + 4 =
Answer: 7
Tip: One number is one more or one less than the other. Use a double you know.
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