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Add and subtract fractions with unlike denominators · Grade 7 · B2.5

Name: ______________________

Date: ______________________

1
Add: 23 + 34. Give your answer as a fraction.
Warm-up
Answer:
2
Add: 14 + 45. Give your answer as a fraction.
Warm-up
Answer:
3
Add: 23 + 34. Give your answer as a fraction.
Warm-up
Answer:
4
Subtract: 45 − 23. Give your answer as a fraction.
On level
Answer:
5
Subtract: 23 − 47. Give your answer as a fraction.
On level
Answer:
6
Subtract: 57 − 13. Give your answer as a fraction.
On level
Answer:
7
Add: 38 + 39. Give your answer as a fraction.
Challenge
Answer:
8
Add: 25 + 26. Give your answer as a fraction.
Challenge
Answer:
9
Add: 57 + 28. Give your answer as a fraction.
Challenge
Answer:

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Worksheet code: eyJzIjoibnVtYmVyLWZyYWN0aW9uLWFkZC1zdWJ0cmFjdC11bmxpa2UiLCJkIjpbNDM1ODgzNjI3LDExMDkwMDg2MTAsMTIyNDA1NzEyNSw2NDU5NDQ5MjAsMTA4NDY4ODczMyw2Njk5ODQwNTAsMzExMTY3NjQxLDE4NTA5MzI0MDUsOTYzMzQ5ODk4XSwidiI6MX0.19a6e7318a5b

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Answer key · Add and subtract fractions with unlike denominators

1.
17/12 — Common denominator 12: 812 + 912 = 1712.
2.
21/20 — Common denominator 20: 520 + 1620 = 2120.
3.
17/12 — Common denominator 12: 812 + 912 = 1712.
4.
2/15 — Common denominator 15: 1215 − 1015 = 215.
5.
2/21 — Common denominator 21: 1421 − 1221 = 221.
6.
8/21 — Common denominator 21: 1521 − 721 = 821.
7.
17/24 — Common denominator 72: 2772 + 2472 = 5172.
8.
11/15 — Common denominator 30: 1230 + 1030 = 2230.
9.
27/28 — Common denominator 56: 4056 + 1456 = 5456.