4th grade mixed numbers & improper fractions worksheets
Mixed numbers worksheets for fourth grade convert in both directions: improper fractions like 7/4 become 1 3/4, and mixed numbers like 2 1/3 become 7/3. The key idea: a fraction is a sum of smaller fractions, and wholes are just groups of same-size parts.
Free printable PDF worksheet, aligned to Common Core 4.NF.B.3.b.
A new sheet every click.
The kind of problems you'll get
Convert each fraction as asked.
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Write as an improper fraction.
Answer: 7/6
- Write as an improper fraction.
- Write as an improper fraction.
Every print pulls a fresh set of problems at this level, so a make-up test or a second sibling never gets the same sheet.
What's on each sheet
- Fluency. Convert each fraction as asked. 12 questions per page.
Every version prints on US Letter or A4, with its answer key on the last page.
How to teach this
Draw the wholes for the first few: 7/4 becomes one circle of four fourths plus three more fourths. For the return trip, say the multiply-then-add out loud ("two threes are six, plus one is seven") before writing 7/3. If the denominator changes during a conversion, stop right there; that's the error to fix.
Watch for: Kids write the leftover over the wrong number, turning 7/4 into 1 3/7. The remainder stays in fourths, so it sits over the original denominator. Kids add the whole number straight to the top, turning 2 1/3 into 3/3. The 2 is worth 6 thirds, so multiply by the bottom before adding.
Common questions about mixed numbers & improper fractions
- Which direction is harder for kids?
- Usually mixed number to improper fraction, because it takes two steps: multiply, then add. The sheet mixes both directions so neither one gets rusty.
- Is an improper fraction a wrong answer?
- Not at all. 7/3 and 2 1/3 are the same number in different clothes, and fourth graders need to move between them freely.
Related worksheets
- 5th grade mixed numbers & improper fractions A step harder, same skill
- 4th grade add & subtract like denominators Same grade, nearby skill
- 4th grade comparing fractions Same grade, nearby skill
- 4th grade equivalent fractions Same grade, nearby skill
- Mixed numbers & improper fractions, all grades The full progression
- All 4th grade math worksheets Every skill at this level
- All 4th grade worksheets Everything at this level
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Aligned to Common Core 4.NF.B.3.b. Reviewed by the One more sheet curriculum team. Content version 123, updated July 2026.