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Explain why the scratch algorithm works.Choose the correct answer below.A. The scratch marks represent the exchanges and a way to keep track of them.B. The

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Explain why the scratch algorithm works.Choose the correct answer below.A. The scratch marks represent the exchanges and a way to keep track of them.B. The scratch method adds the same amount to both numbers to make addition easier.C. The scratch method does not work.D. The scratch method scratches out numbers that are difficult to add.

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