Adding Fractions With Like Denominators Worksheets

When the denominators match, adding fractions means adding the numerators: 3/8 + 2/8 = 5/8. These sheets build that idea and the habit of simplifying.

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Sheet code 2CEKTE
NameDate

Adding Fractions: Like Denominators

Score / 16

Add. Simplify your answer.

1.36+26=
2.24+24=
3.38+48=
4.46+46=
5.45+15=
6.47+27=
7.18+18=
8.24+14=
9.38+58=
10.59+19=
11.711+911=
12.412+712=
13.79+89=
14.14+14=
15.112+212=
16.46+26=
endlessmathsheets.comSheet 2CEKTE

Answer keyAdding Fractions: Like Denominators

Add. Simplify your answer.

1.36+26=56
2.24+24=44=1
3.38+48=78
4.46+46=86=113
5.45+15=55=1
6.47+27=67
7.18+18=28=14
8.24+14=34
9.38+58=88=1
10.59+19=69=23
11.711+911=1611=1511
12.412+712=1112
13.79+89=159=123
14.14+14=24=12
15.112+212=312=14
16.46+26=66=1
endlessmathsheets.comSheet 2CEKTE

What's on this worksheet

Two fractions with the same denominator (2 to 12). Some sums are greater than 1, and the answer key shows those as mixed numbers. Each sheet comes with an answer key on a separate page.

Teaching tips

  • Stress that the denominator stays the same because the size of the pieces does not change.
  • If students have not learned to simplify yet, accept unsimplified answers. The key shows both forms.

How to use this worksheet maker

Press New worksheet for a fresh set of problems, then Print. To save a PDF instead, choose "Save as PDF" in the print window. Every sheet has a short code in the bottom corner. Copy the link to a sheet and you can print exactly the same problems again later, which is handy for retakes and for sharing with other teachers.

Common Core alignment: 4.NF.B.3 (Grade 4).