Skip to content
LessonPrint

Add Mixed Numbers — Like Denominators is a free printable Grade 4 math worksheet on adding wholes and parts, carrying a whole when the parts pass one, 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.

Set 12 of 25 · the same problems every time you open this link.

Next set

One paper per student

12345678910111213141516171819202122232425

Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Add Mixed Numbers — Like Denominators

4.NF.B.3

NameDate

Work out each answer. Simplify where you can.

1.3 1/3 + 4 2/3 =
2.5 1/10 + 3 4/10 =
3.1 3/4 + 1 2/4 =
4.3 9/10 + 3 1/10 =
5.6 3/5 + 1 2/5 =
6.2 4/5 + 4 4/5 =
7.2 1/5 + 2 3/5 =
8.1 8/12 + 1 5/12 =
9.5 1/3 + 1 1/3 =
10.1 1/5 + 4 1/5 =
11.1 1/3 + 2 1/3 =
12.1 2/5 + 3 3/5 =

LessonPrint · 4.NF.B.3 · Set 12 · free to copy for classroom use

Answer key — Add Mixed Numbers — Like Denominators

Set 12. Prints on its own sheet.

  1. 1.8
  2. 2.8 1/2
  3. 3.3 1/4
  4. 4.7
  5. 5.8
  6. 6.7 3/5
  7. 7.4 4/5
  8. 8.3 1/12
  9. 9.6 2/3
  10. 10.5 2/5
  11. 11.3 2/3
  12. 12.5

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