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13-09-2016
Mathematics

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

What addition doubles fact can help you solve 45 Explain how you know class=

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Аноним Аноним

18-04-2017

1+8 It can help because 4+5 equals 9. So 1+8 will help because it equals 9 too.

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