Mathematics
Fractions
Procedural
9–10 yrs
Adding fractions (different denominators)
分数加法（异分母）
Description
Add and subtract fractions with denominators that are multiples of the same number by finding a common denominator
Mastery Evidence
- Calculate 1/3 + 1/6 by converting to sixths: 2/6 + 1/6 = 3/6 = 1/2
- Calculate 3/4 − 1/8 by converting to eighths
- Add 2/5 + 3/10 and simplify the answer
Assessment Prompt
If your child needs to add 1/3 and 1/6, can they find a common denominator and work out the total — showing their working?
