We began addition and subtraction in number by exploring number facts. If we know 3+4=7 then we know 4+3=7, 7-4=3 and7-3=4.
Number
We began addition and subtraction in number by exploring number facts. If we know 3+4=7 then we know 4+3=7, 7-4=3 and7-3=4.
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