Comparing Fractions with the Same Numerator
Twenty-four pairs of fractions with the same top number and different bottom numbers. Students write <, > or =. The key idea: when you have the same number of pieces, bigger pieces make a bigger fraction, and a bigger denominator means smaller pieces.
- Grade
- Grade 3
- Problems
- 24
- Time
- About 10 minutes
- Standard
- 3.NF.A.3d
Download
Download PDF (US Letter) Download PDF (A4)Two pages: the worksheet, then the answer key. No sign-up needed.
Compare Write <, > or = in each box.
- 14>18
- 34>38
- 13>16
- 13>18
- 16>18
- 12>16
- 48<46
- 23>24
- 18<13
- 12=12
- 26<23
- 34>36
- 28<24
- 23>28
- 46>48
- 12>14
- 14>16
- 13<12
- 24>28
- 28=28
- 16<14
- 38<34
- 58<56
- 36<34
Tips for teachers and parents
- Start with unit fractions: would you rather have 1/2 or 1/8 of a pizza? Most students already know the half is bigger.
- Ask: the same number of pieces, but which pieces are bigger? Pieces get smaller as the denominator gets bigger.
- Draw two equal bars, one in thirds and one in eighths, and shade two parts of each. The picture makes 2/3 > 2/8 obvious.
- Mix this sheet with the like-denominators sheet so students decide which rule applies before comparing.
Common mistakes
- Deciding that 2/8 is bigger than 2/3 because 8 is bigger than 3. This is the most common fraction error in grade 3.
- Using the like-denominator rule here and comparing the top numbers, which are the same.
What to practice next
Equivalent fractions show why some pairs with different numbers, like 1/2 and 2/4, are equal.
Frequently asked questions
Why is 1/3 bigger than 1/8?
Both are one piece, but thirds are bigger pieces than eighths because the whole is split into fewer parts.
What denominators are used?
2, 3, 4, 6 and 8, the grade 3 denominators. Two problems compare a fraction with itself, so the answer is =.
Is there an answer key?
Yes, page 2 has all 24 answers.