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18 May, 13:29

Use benchmarks to estimate 2.81 + 3.72

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Answers (2)
  1. 18 May, 16:49
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    I am guessing it's seven because 2.81 rounds to 3 and 3.72 rounds to 4. So 3+4=7
  2. 18 May, 17:08
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    Because 2.81 rounded to the nearest benchmark is 3, and 3.72 rounded to the nearest benchmark is 3.5, and 3 plus 3.5 is 6.5
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