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lesson 18
1 hour

Use Basic Facts To Approximate Quotients (Continued)


Students round dividends and2-digit divisors to nearby multiples of ten in order to estimate single digit quotients (e.g., 431 ÷ 58 ≈ 420 ÷ 60 = 7) and then multi-digit quotients. This work is done horizontally, outside the context of the written vertical method.


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From of the New York State Education Department. Grade 5 Mathematics Module 2, Topic E, Lesson 18. Available from; accessed 2015-05-29.
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