Add and subtract fractions with unlike denominators
Use equivalence to add and subtract fractions with different denominators.
Taught in Primary 5 in Nigeria (NERDC), Year 5 in United Kingdom (National Curriculum), Grade 6 in Canada (Ontario).
Nigeria (NERDC)
Primary 5
- Strand
- Number and Numeration
- Called
- Add and subtract fractions with unlike denominators
- How it's taught
- Find the LCM of the denominators explicitly, rewrite each fraction, then add; LCM working shown.
United Kingdom (National Curriculum)
Year 5
- Strand
- Fractions, Decimals and Percentages
- Called
- Add and subtract fractions with unlike denominators
- How it's taught
- Year 5 uses denominators that are multiples of one another; any denominators by Year 6.
Canada (Ontario)
Grade 6
- Strand
- Number
- Called
- Add and subtract fractions with unlike denominators
- How it's taught
- Grade 6 expectation, tools first (fraction strips, double number lines) before symbolic work.