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Collin used estimation to solve 67 + 239. He made this number sentence by rounding to the nearest ten : 60 + 240 = 300. Where did Collin make a mistake

User Bitrock
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1 Answer

21 votes
21 votes

collin rounded 67 to 60 when he should have rounded it to 70. So 70 + 240 = 310 would be the correct estimation

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