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OAS 5.N.3.1 Worksheets

OAS 5.N.3.1 (Oklahoma, 5th Grade): "Estimate sums and differences of fractions with like and unlike denominators, mixed numbers, and decimals to assess the reasonableness of the 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.3 Add and subtract fractions with like and unlike denominators, mixed numbers, and decimals to solve real-world and mathematical problems. 5.N.3.1Estimate sums and differences of fractions with like and unlike denominators, mixed numbers, and decimals to assess the reasonableness of the results.

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5.N.3.1

OAS 5.N.3.1 Worksheets - Estimating Sums, Differences and Change with Money (Word Problems) worksheet

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Estimating Sums, Differences and Change with Money (Word Problems)

5nbt7

Round money amounts to the nearest dollar before adding or subtracting.
Estimate totals, differences, and change in real-world money situations.
Use estimation to check whether an exact answer is reasonable.

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OAS 5.N.3.1 Worksheets - Estimating a Total from a Table of Decimals worksheet

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Estimating a Total from a Table of Decimals

5nbt7

Round decimals to the nearest whole number
Estimate a sum of several decimals
Judge whether a total is reasonable
Read amounts out of a table

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OAS 5.N.3.1 Worksheets - Estimating Fraction Sums and Differences worksheet

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Estimating Fraction Sums and Differences

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Round a fraction to 0, one half or 1.
Estimate a sum of two fractions.
Estimate a difference of two fractions.

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OAS 5.N.3.1 Worksheets - Deciding if a Fraction Answer is Reasonable worksheet

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Deciding if a Fraction Answer is Reasonable

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Judge whether a fraction sum is reasonable.
Use benchmarks to estimate before checking.
Recognize the error of adding numerators and denominators.

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OAS 5.N.3.1 Worksheets - Estimating Sums and Differences of Mixed Numbers worksheet

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Estimating Sums and Differences of Mixed Numbers

5nf2

Round a mixed number to the nearest whole number.
Estimate a sum of two mixed numbers.
Estimate a difference of two mixed numbers.

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OAS 5.N.3.1 Worksheets - Choosing the Closest Estimate with Money worksheet

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Choosing the Closest Estimate with Money

5nbt7

Choose the amount closest to the answer without calculating exactly.
Estimate change from a bill.
Estimate a total or a difference in price.

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OAS 5.N.3.1 Worksheets - Choosing the Closest Estimate with Fractions worksheet

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Choosing the Closest Estimate with Fractions

5nf2

Estimate a sum or difference of mixed numbers.
Choose the amount closest to an answer.
Judge the size of a fraction answer without calculating.

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OAS 5.N.3.1 Worksheets - Choosing the Closest Estimate with Decimals worksheet

Load up one problem at a time! Ideal for projectors, tablets and computers.

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Choosing the Closest Estimate with Decimals

5nbt7

Estimate a sum or difference of decimals.
Choose the amount closest to an answer.
Judge the size of a decimal answer without calculating.

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