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Worksheets›Grade 4›Fractions & decimals›Adding & subtracting like fractions

Adding & Subtracting Like Fractions Worksheets

Free printable worksheets with answer keys. Pick a level, preview the questions, then open the sheet to swap or delete any single question.

Grade 4CCSS 4.NF.B.3Answer key includedPDF · Print
Open in generatorStart with an easy sheet

Easy: Proper fractions, answers less than 1

  1. 1.25 − 15 =
  2. 2.27 + 37 =
  3. 3.912 − 612 =
  4. 4.710 − 110 =
  5. 5.112 + 112 =
  6. 6.610 + 210 =
Preview shows 6 of 12 questions. Every sheet is new; open it to change any question.

Worksheet variations

When the denominators match, add or subtract the numerators and keep the denominator. With mixed numbers, work with the wholes and the fractions, regrouping a whole if needed.

Easy19 + 29 =Proper fractions, answers less than 1Medium45 + 15 =Sums greater than 1; taking away from mixed numbersHard523 − 423 =Mixed numbers, with regrouping

How to solve it: a worked example

Add or subtract. Write answers greater than 1 as mixed numbers.

  1. Start13 + 13 =
  2. Add the numerators; keep the denominator1 + 13 = 23
  3. Answer23

Common mistakes to watch for

  • Adding the denominators too, so 2/5 + 1/5 becomes 3/10.
  • Leaving an improper fraction instead of a mixed number.
  • Not regrouping a whole when the fraction being subtracted is larger.

Tip: tick “Step-by-step answer key” in the generator to print each step for marking.

Related worksheets

Multiplying fractions by whole numbersTenths & hundredths as decimalsComparing decimalsAdding & subtracting unlike fractions (Grade 5)Multiplying fractions (Grade 5)

FAQ

Is every worksheet different?

Yes. Numbers are generated each time, and the answer key is calculated for that sheet. Swap any single question and its answer updates too.

Can I mix adding & subtracting like fractions with other skills?

Yes. In the generator, add more skills; each gets its own section on the sheet with its own instructions.

Is it free to print?

Yes. Generating and printing from the browser is free with no sign-up. PDF downloads need a free account.