4th grade fraction of a number worksheets

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Fraction of a number worksheets for fourth grade ask questions like 1/4 of 20, leaning on unit fractions, one part at a time. Divide by the denominator to find that single part; answers come out whole every time.

Free printable PDF worksheet, aligned to Common Core 4.NF.B.4.b.

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The kind of problems you'll get

Simplify each answer. Write improper fractions as mixed numbers.

  1. 2/3 × 6

    Answer: 4

  2. 1/3 × 12

    Answer: 4

  3. 4/5 × 25

    Answer: 20

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 a 4th grade sheet

The sample sheet above has 10 problems. Its answers run from 2 to 20.

Every version prints on US Letter or A4, with its answer key after the problems.

How to teach this

Make it physical once: deal 20 beans into 4 equal piles, and 1/4 of 20 is just one pile. Then say the move as a rule: "of a number means divide by the bottom." If dividing is shaky, keep a multiplication facts sheet nearby, because this skill is only as fast as the facts under it.

Watch for: Kids divide by the top number instead of the bottom. The denominator says how many equal parts to cut, so divide by it first. Kids stop after the dividing step: 18 ÷ 3 only finds one third, and 2/3 needs that result multiplied by 2.

Common questions about 4th grade fraction of a number

Why do 4th grade problems mostly use fractions with 1 on top?
Unit fractions isolate the core move: divide to find one part. Once 1/4 of 20 is automatic, 3/4 of 20 is just one more multiplication.
Will the division always come out even?
Yes. Numbers are chosen so every answer is whole. The point here is fraction reasoning, not remainders.

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Aligned to Common Core 4.NF.B.4.b. Reviewed by the One more sheet team. Content version 240, updated September 2026.

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