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Use a mental math strategy to find 290+602.Eplain how to checkyour answer using a diffrent strategy.
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Use a mental math strategy to find 290+602.Eplain how to checkyour answer using a diffrent strategy.

User Iman Kazemayni
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Mental math: 892

To check your answer, subtract 892-290 or 892-602. If you chose 892-290, the answer would be 602. If you chose 892-602, the answer would be 290.

Hope this helps
User Salep
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