Mathematics
Fractions
Procedural
9–10 yrs
Multiplying fractions
分数乘法
Description
Understand a/b as a multiple of 1/b; multiply proper fractions and mixed numbers by whole numbers, supported by visual models (e.g. 3 × 2/5 = 6/5 = 1 1/5)
Mastery Evidence
- Calculate 4 × 3/8 using repeated addition or the rule n × a/b = (n×a)/b
- Multiply 2 1/3 × 3 and express as a mixed number
- Use a visual model to show why 5 × 1/4 = 5/4
Assessment Prompt
If a recipe uses 2/3 of a cup of butter and your child wants to make it three times over, can they work out how much butter they need in total?
