Composition of non-unit fractions: addition and subtraction
Why this, why now
In this unit pupils will use repeated addition of a unit fraction to form a non-unit fraction. They will compare non-unit fractions with the same denominator. They will add and subtract fractions with the same denominator.
Prior knowledge requirements
- Ardaydu waa inay yaqaanaan aasaaska maadada.
- Ardaydu waa inay awoodaan inay raacaan tilmaamo fudud.
Unit 18 / 20
Composition of non-unit fractions: addition and subtraction
In this unit pupils will use repeated addition of a unit fraction to form a non-unit fraction. They will compare non-unit fractions with the same denominator. They will add and subtract fractions with the same denominator.
10 lessons- Add fractions with the same denominator and generalise the rule
- Add on fractions with the same denominator
- Substitute a fraction representing a whole to solve subtraction problems
- Add fractions with the same denominator
- Explain that addition and subtraction of fractions are inverse operations
- Use repeated addition of a unit fraction to form a non-unit fraction
- Add and subtract fractions with the same denominator in a range of contexts
- Use repeated addition of a unit fraction to form 1
- Subtract fractions from a whole by converting the whole to a fraction
- Subtract fractions with the same denominator