What this covers
Equivalent Fractions is taught in Grade 3 (age 8 to 9) as a topic to introduce. It sits in the Fractions strand.
Worked example
Find the missing number: 35 = /20.
- Determine the multiplier for the denominator: 205 = 4
- Multiply the numerator by the same value: 3 × 4 = 12
- The missing numerator is 12
Answer: 12
Difficulty scale
The sheet generator offers five difficulty settings for this topic.
- Find the missing number in an equivalent fraction, multiplier 2 to 4
- Same, with multipliers up to 4 and small denominators
- Missing numerator in equivalent fractions with multipliers up to 9
- Larger denominators, still a single multiplier
- Mixed denominators up to 9 with multipliers up to 9
Common mistakes
- Adding the same number to both numerator and denominator instead of multiplying (e.g. 2/3 = 3/4)
- Multiplying the numerator but forgetting to multiply the denominator
Curriculum links
Indicative matches to Common Core State Standards. Check wording and codes against the official document.
- 3.NF.A.3 Recognize and generate simple equivalent fractions and compare fractions with the same numerator or denominator.