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use a mental math strategy to find 4,290+3,602. explain how to check your answer using a different strategy.
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use a mental math strategy to find 4,290+3,602. explain how to check your answer using a different strategy.

use a mental math strategy to find 4,290+3,602. explain how to check your answer using-example-1
User Chayan Shri Shrimal
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=7,892 , you could write out your numbers, then line them up to then add them.
User Javy
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