Break Apart a Fraction Two Ways is a free printable Grade 4 math worksheet on writing one fraction as two different sums, aligned to Common Core standard 4.NF.B.3. It prints 10 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 18 of 25 · the same problems every time you open this link.

One paper per student

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

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

Break Apart a Fraction Two Ways

4.NF.B.3

NameDate

Fill in both blanks.

1.3/8 = 2/8 + ___ and 3/8 = 1/8 + ___

2.4/12 = 3/12 + ___ and 4/12 = 2/12 + ___

3.5/10 = 2/10 + ___ and 5/10 = 1/10 + ___

4.5/10 = 2/10 + ___ and 5/10 = 3/10 + ___

5.5/12 = 3/12 + ___ and 5/12 = 4/12 + ___

6.3/6 = 1/6 + ___ and 3/6 = 2/6 + ___

7.4/8 = 1/8 + ___ and 4/8 = 3/8 + ___

8.7/12 = 2/12 + ___ and 7/12 = 4/12 + ___

9.5/8 = 3/8 + ___ and 5/8 = 2/8 + ___

10.5/6 = 2/6 + ___ and 5/6 = 3/6 + ___

LessonPrint · 4.NF.B.3 · Set 18 · free to copy for classroom use

Answer key — Break Apart a Fraction Two Ways

Set 18. Prints on its own sheet.

1.1/8 and 2/8
2.1/12 and 2/12
3.3/10 and 4/10
4.3/10 and 2/10
5.2/12 and 1/12
6.2/6 and 1/6
7.3/8 and 1/8
8.5/12 and 3/12
9.2/8 and 3/8
10.3/6 and 2/6

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