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OAS 5.N.2.1 Worksheets

OAS 5.N.2.1 (Oklahoma, 5th Grade): "Estimate solutions to division problems to assess the reasonableness of results." The worksheets below practice this standard. Each one is a free printable PDF with an answer key, comes in multiple versions, and can also be assigned digitally - no login or account needed.

Numbers & Operations (N) 5.N.2 Divide multi-digit numbers and solve real-world and mathematical problems using arithmetic. 5.N.2.1Estimate solutions to division problems to assess the reasonableness of results.

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5.N.2.1

OAS 5.N.2.1 Worksheets - 3 Digit ÷ 2 Digit worksheet

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3 Digit ÷ 2 Digit

4nbt6

Estimate the answer when dividing a 3-digit number by a 2-digit number.
Round numbers to make division easier to do in your head.
Use compatible (friendly) numbers to find a close quotient.
Choose the closest estimate from a set of possible answers.

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OAS 5.N.2.1 Worksheets - Word 3 ÷ 2 worksheet

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Word 3 ÷ 2

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Estimate the answer to a division word problem by rounding numbers to make them easier to divide.
Choose compatible numbers that divide evenly to get a quick, reasonable quotient.
Use the estimated quotient to decide about how many groups you can make or how many items go in each group.

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OAS 5.N.2.1 Worksheets - Estimating Quotients with Compatible Numbers worksheet

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Estimating Quotients with Compatible Numbers

5nbt6

Round a divisor and dividend to compatible numbers.
Divide the rounded numbers to estimate a quotient.
Use estimation to predict the size of an answer.

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OAS 5.N.2.1 Worksheets - Deciding if a Quotient is Reasonable worksheet

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Deciding if a Quotient is Reasonable

5nbt6

Judge whether a division answer is reasonable.
Use an estimate to catch a place value error.
Recognize an answer that is ten times too big or too small.

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