# Blank Number Line: Showing Thirds

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Related Lines: Halves | Thirds | Fourths | Fifths | Sixths | Sevenths | Eighths | Ninths | Tenths | Hundredths

You might find this versatile number line generator to be useful.

## Related Resources

The Fractions Number Line above is aligned, either partially or wholly, with standard 4NF03 taken from the CCSM (Common Core Standards For Mathematics) - see the extract below). The resources below are similarly aligned.

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