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CCSS 4.NF.3C Worksheets

CCSS 4.NF.3C (Common Core, 4th Grade): "Add and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction." 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.

Number and Operations—Fractions Build fractions from unit fractions by applying and extending previous understandings of operations on whole numbers. 3Understand a fraction a/b with a > 1 as a sum of fractions 1/b. cAdd and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction.

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CCSS 4.NF.3C Worksheets - Adding Fractions Numeric & Visual worksheet

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Adding Fractions Numeric & Visual

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Add two fractions to find the total amount.
Add fractions with the same denominator.
Match a fraction sum to the correct picture model.

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CCSS 4.NF.3C Worksheets - Adding Mixed Fractions (Visual) worksheet

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Adding Mixed Fractions (Visual)

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Add mixed numbers by combining the whole-number parts and the fraction parts.
Use pictures or fraction models to see what the fractions add up to.

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CCSS 4.NF.3C Worksheets - Adding to 1 whole worksheet

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Adding to 1 whole

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Find the missing fraction that completes a whole when one part is given.
Add fractions with the same denominator to make a total of 1.

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CCSS 4.NF.3C Worksheets - Improper Fractions (Same Denominator) worksheet

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Improper Fractions (Same Denominator)

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Add improper fractions when the bottom number is the same.
Subtract improper fractions when the bottom number is the same.
Rename an improper fraction as a mixed number after you add or subtract.
Simplify the final answer when the fraction can be reduced.

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CCSS 4.NF.3C Worksheets - Mixed Fractions (Same Denominator) worksheet

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

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Customize Problems.

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Mixed Fractions (Same Denominator)

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Add mixed numbers when the fractions have the same denominator.
Subtract mixed numbers when the fractions have the same denominator.
Regroup when subtracting by borrowing 1 whole and turning it into fractional parts.

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CCSS 4.NF.3C Worksheets - Improper to Mixed Number worksheet

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Improper to Mixed Number

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Turn an improper fraction into a mixed number by finding how many whole groups it makes and what part is left over.
Use division to connect the numerator and denominator when rewriting a fraction as a whole number plus a fraction.
Write the remainder as the fractional part with the same denominator.

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CCSS 4.NF.3C Worksheets - Mixed Number to Improper worksheet

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Mixed Number to Improper

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Convert a mixed number into an improper fraction.
Multiply the whole number by the denominator to find how many fractional parts are in the whole part.
Add the extra numerator to get the new numerator while keeping the same denominator.

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CCSS 4.NF.3C Worksheets - Subtracting Fractions (with regrouping) worksheet

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Subtracting Fractions (with regrouping)

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Subtract mixed numbers when the fraction part is too small and you need to borrow 1 whole to keep subtracting.

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CCSS 4.NF.3C Worksheets - Subtracting Mixed Fractions (Visual) worksheet

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Subtracting Mixed Fractions (Visual)

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Subtract mixed fractions to find the difference between two amounts.
Use fraction pictures to see how the wholes and parts change when you subtract.

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