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Add and Subtract Mixed is a free printable Grade 4 math worksheet on switching operation item by item, aligned to Common Core standard 4.NF.B.3. It prints 12 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

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All 25 sets ask different questions.

Add and Subtract Mixed

4.NF.B.3

NameDate

Work out each answer. Simplify where you can.

1.4/5 + 4/5 =
2.6/10 + 1/10 =
3.1/8 + 1/8 =
4.2/8 + 4/8 =
5.2/3 + 2/3 =
6.4/5 + 3/5 =
7.8/12 − 5/12 =
8.3/4 − 1/4 =
9.3/6 − 2/6 =
10.3/4 − 2/4 =
11.7/8 − 2/8 =
12.5/6 − 2/6 =

LessonPrint · 4.NF.B.3 · Set 1 · free to copy for classroom use

Answer key — Add and Subtract Mixed

Set 1. Prints on its own sheet.

  1. 1.8/5
  2. 2.7/10
  3. 3.1/4
  4. 4.3/4
  5. 5.4/3
  6. 6.7/5
  7. 7.1/4
  8. 8.1/2
  9. 9.1/6
  10. 10.1/4
  11. 11.5/8
  12. 12.1/2

Questions about Add and Subtract Mixed

What does the Add and Subtract Mixed worksheet cover?

It practices switching operation item by item — 12 questions for Grade 4, all on Common Core 4.NF.B.3: Add and subtract fractions with the same denominator. The instruction to students is “Work out each answer. Simplify where you can”, and the answer key follows on the next sheet.

Which Common Core standard does Add and Subtract Mixed practice?

CCSS.MATH.CONTENT.4.NF.B.3 — 4.NF.B.3, under Number & Operations — Fractions for Grade 4. The published standard reads: “Understand a fraction a/b with a > 1 as a sum of fractions 1/b; add and subtract fractions with like denominators.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Add and Subtract Mixed is written for Grade 4, typically ages 9-10. It is one of the sheets on 4.NF.B.3, so it suits any student working at that standard — including older students revisiting it and younger ones working ahead.

Does Add and Subtract Mixed come with an answer key?

Yes. All 12 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.

How many different versions of Add and Subtract Mixed can I print?

25 — one per student, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.

Is Add and Subtract Mixed free to print and photocopy?

Yes. Add and Subtract Mixed, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.

More practice for 4.NF.B.3

Add and subtract fractions with the same denominator.

All Grade 4 worksheets

Last reviewed 2026-09-05. Aligned to 4.NF.B.3 of the Common Core State Standards for Mathematics.