# Fractions: Subtracting (same denominator)

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 3⁄5 - 2⁄5 = 1⁄5 3⁄4 - 2⁄4 = 1⁄4 2⁄5 - 1⁄5 = 1⁄5 5⁄6 - 4⁄6 = 1⁄6 5⁄7 - 4⁄7 = 1⁄7 4⁄5 - 3⁄5 = 1⁄5 3⁄8 - 2⁄8 = 1⁄8 7⁄8 - 3⁄8 = 1⁄2 4⁄7 - 1⁄7 = 3⁄7 6⁄7 - 3⁄7 = 3⁄7 7⁄8 - 1⁄8 = 3⁄4 3⁄5 - 1⁄5 = 2⁄5 7⁄12 - 1⁄12 = 1⁄2 3⁄8 - 2⁄8 = 1⁄8 5⁄9 - 3⁄9 = 2⁄9 11⁄12 - 7⁄12 = 1⁄3 13⁄16 - 7⁄16 = 3⁄8 8⁄8 - 1⁄8 = 7⁄8 9⁄14 - 3⁄14 = 6⁄14 16⁄17 - 12⁄17 = 5⁄17 11⁄16 - 6⁄16 = 5⁄16 7⁄8 - 2⁄8 = 5⁄8 9⁄16 - 1⁄16 = 1⁄2 23⁄32 - 17⁄32 = 3⁄16

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## Related Resources

The various resources listed below are aligned to the same standard, (4NF03) taken from the CCSM (Common Core Standards For Mathematics) as the Fractions Worksheet shown above.

Understand a fraction a/b with a > 1 as a sum of fractions 1/b.

• Understand addition and subtraction of fractions as joining and separating parts referring to the same whole.
• Decompose a fraction into a sum of fractions with the same denominator in more than one way, recording each decomposition by an equation. Justify decompositions, e.g., by using a visual fraction model. Examples: 3/8 = 1/8 + 1/8 + 1/8 ; 3/8 = 1/8 + 2/8 ; 2 1/8 = 1 + 1 + 1/8 = 8/8 + 8/8 + 1/8.
• 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.
• Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, e.g., by using visual fraction models and equations to represent the problem.

### Worksheet

#### Worksheet Generator

Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:

Build fractions from unit fractions by applying and extending previous understandings of operations on whole numbers