Adding Fractions with Like Denominators
Same denominator on both fractions, so the whole job is adding the numerators and keeping the denominator, then simplifying. At the easy setting the sums stay under 1; at medium and hard some sums pass 1 and the key writes them as mixed numbers (5/6 + 4/6 = 1 1/2). This is the first fraction operation most programs teach and the one to make automatic before unlike denominators.
Halves to tenths.
Ready-made PDFs
One-click downloads, answer key included, a different puzzle in each.
FAQ
Do the sums go over 1?
Not on the easy setting. On medium and hard, yes: the numerators can add up past the denominator, and the key shows the result as a mixed number in lowest terms.
How are the answers written on the key?
In lowest terms, and as a mixed number when the result is more than 1 (7/4 shows as 1 3/4). If a student writes an unsimplified but correct fraction, that is a teaching moment rather than a wrong answer; the key shows the form most rubrics expect.
Can students work these on a tablet?
Yes. Practice online puts a pen tool over the same sheet, so the fraction can be written with a stylus or finger and wiped for another try.
How do I print this adding fractions worksheet?
Click Download PDF and print at 100% scale. The page is already sized for US Letter with printer-safe margins, so no fit-to-page fiddling is needed.
Why keep the denominator the same?
Because adding the denominators is the single most common fraction error. A page where every denominator matches lets students practice the rule (add the tops, keep the bottom) until it is reflex, before unlike denominators add a step.
What does the Denominators control change?
The largest denominator the generator may use: 6, 10 or 12. Smaller denominators keep the numbers friendly for a first pass; 12 brings in sevenths, ninths and elevenths, which force the general method instead of pattern-spotting.
Can I get different versions for each student?
Turn on the 5 versions switch before downloading. You get five different sheets in one PDF, each with its own answer key, so neighbouring desks cannot copy.