Build a worksheet →

Grade 4 add fractions, like denominators worksheets

4.NF.B.3 Fractions and decimals

Printable add fractions, like denominators worksheets for grade 4, aligned to Common Core standard 4.NF.B.3. Answers reduced.

Make a worksheet on this skill

Free, instant, no signup. Choose 5–40 problems, three difficulty levels, and a printable answer key.

Sample problems

  1. 2/5 + 1/5 = 3/5
  2. 4/10 + 2/10 = 3/5
  3. 2/4 + 1/4 = 3/4
  4. 7/10 + 1/10 = 4/5
  5. 1/4 + 1/4 = 1/2
  6. 1/8 + 5/8 = 3/4
  7. 2/8 + 4/8 = 3/4
  8. 2/6 + 1/6 = 1/2

These eight are one sample at medium difficulty — the generator makes a different set every time.

A worked example

2/5 + 1/5 = 3/5

  1. Same denominator, so add the numerators: 2 + 1 = 3
  2. Keep the denominator: 3/5

Every problem on the answer key can show its steps like this — turn on “Show steps” before downloading.

About these worksheets

Fractions and decimals are where a small slip in one step changes the whole answer, so the worked steps matter. Every sheet is generated fresh, so you can print a new one on the same skill as often as you need — different numbers, same difficulty.

Pick how many problems you want and whether they should be easy, medium or hard, then download a PDF with a matching answer key. The key can show the worked steps for every problem, which is what a parent needs to see where a wrong answer went wrong.

More grade 4 worksheets

Number and operations

Fractions and decimals

Word problems

Measurement and geometry

All 26 grade 4 skills