Efficient strategies for adding and subtracting mixed numbers (crossing a whole)
Efficient strategies for adding and subtracting mixed numbers (crossing a whole)
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Why this why now
In this unit, pupils put together their understanding of mixed numbers and converting between them and improper fractions, to add and subtract mixed numbers when crossing the whole. This thinking will be applied and developed when calculating with fractions in future units.
Prior knowledge requirements
- Recall number facts and sequences
- Use place value understanding
- Apply basic operations in context
Threads
Why this why now
In this unit, pupils put together their understanding of mixed numbers and converting between them and improper fractions, to add and subtract mixed numbers when crossing the whole. This thinking will be applied and developed when calculating with fractions in future units.
Prior knowledge requirements
- Recall number facts and sequences
- Use place value understanding
- Apply basic operations in context
Efficient strategies for adding and subtracting mixed numbers (crossing a whole)
In this unit pupils will add mixed numbers. They will subtract a proper fraction from a mixed number and subtract a mixed number from a mixed number explaining which strategy is most efficient.
5 lessons in unit
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