Fraction addition worksheet for students to solve and reduce sums to lowest terms.

Let’s solve each problem step by step. Remember: when adding fractions with the same denominator, you just add the numerators and keep the denominator the same. Then, reduce the fraction to lowest terms if needed.

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Problem 1:
8/10 + 8/10 = (8+8)/10 = 16/10
Now reduce 16/10 → divide numerator and denominator by 2 → 8/5
But 8/5 is an improper fraction — we can write it as a mixed number: 1 3/5
Wait — let’s check: 16 ÷ 2 = 8, 10 ÷ 2 = 5 → yes, 8/5. But maybe they want it reduced fully? 8 and 5 have no common factors, so 8/5 is simplest form. Or should we write as mixed number? The instruction says “reduce to lowest terms” — that usually means simplify the fraction, not necessarily convert to mixed number unless specified. Let’s stick with simplified fraction: 8/5

Actually, let me double-check all problems carefully.

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Problem 1:
8/10 + 8/10 = 16/10 → divide top and bottom by 2 → 8/5

Problem 2:
4/5 + 3/5 = 7/5 → already in lowest terms → 7/5

Problem 3:
3/6 + 3/6 = 6/6 = 1

Problem 4:
8/9 + 5/9 = 13/9 → already reduced → 13/9

Problem 5:
2/4 + 3/4 = 5/4 → already reduced → 5/4

Problem 6:
5/10 + 1/10 = 6/10 → divide by 2 → 3/5

Problem 7:
1/3 + 2/3 = 3/3 = 1

Problem 8:
3/9 + 5/9 = 8/9 → already reduced → 8/9

Problem 9:
4/6 + 1/6 = 5/6 → already reduced → 5/6

Problem 10:
1/5 + 3/5 = 4/5 → already reduced → 4/5

Problem 11:
7/8 + 1/8 = 8/8 = 1

Problem 12:
1/4 + 1/4 = 2/4 → divide by 2 → 1/2

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Let me verify each one again quickly:

1. 8+8=16 → 16/10 = 8/5 ✔
2. 4+3=7 → 7/5 ✔
3. 3+3=6 → 6/6=1 ✔
4. 8+5=13 → 13/9 ✔
5. 2+3=5 → 5/4 ✔
6. 5+1=6 → 6/10=3/5 ✔
7. 1+2=3 → 3/3=1 ✔
8. 3+5=8 → 8/9 ✔
9. 4+1=5 → 5/6 ✔
10. 1+3=4 → 4/5 ✔
11. 7+1=8 → 8/8=1 ✔
12. 1+1=2 → 2/4=1/2 ✔

All correct!

Final Answer:
1. 8/5
2. 7/5
3. 1
4. 13/9
5. 5/4
6. 3/5
7. 1
8. 8/9
9. 5/6
10. 4/5
11. 1
12. 1/2