ruthc22ow71uk ruthc22ow71uk

13-09-2017
Mathematics

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What addition doubles fact can help you solve 4 +5?

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Аноним Аноним

13-09-2017

4 + 4 can help. Then add one.

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Аноним Аноним

13-09-2017

4+4= 8 + 1=9
2+2=4 + 5=9

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