Adding and Subtracting Fractions Quiz

Grade 4 · Math · Quiz

Test your skills adding and subtracting fractions with like denominators.

Questions

What is 2/5 + 1/5?
1. 3/10
2. 3/5
3. 2/5
4. 1/5
Show answer
Answer: 3/5
2/5 + 1/5: add numerators (2+1=3), keep denominator. Answer: 3/5.
4/6 + 2/6 = 6/6 = 1 whole
Show answer
Answer: True
4/6 + 2/6 = 6/6 = 1. When numerator equals denominator, the fraction equals 1 whole.
7/12 − 3/12 = ___
Show answer
Answer: 4/12
7/12 − 3/12: subtract numerators (7−3=4), keep denominator 12. Answer: 4/12 (simplifies to 1/3).
A recipe uses 1/4 cup of sugar and 2/4 cup of brown sugar. How much total sugar?
1. 3/4
2. 3/8
3. 2/4
4. 1/2
Show answer
Answer: 3/4
1/4 + 2/4 = 3/4 cup of sugar total.
What is 5/8 − 3/8?
1. 2/16
2. 2/8
3. 1/4
4. 1/2
Show answer
Answer: 2/8
5/8 − 3/8: subtract numerators (5−3=2), keep denominator. Answer: 2/8 (simplifies to 1/4).
3/10 + 4/10 = 7/20
Show answer
Answer: False
3/10 + 4/10 = 7/10, not 7/20. The denominator stays the same — it does not get added.
2/9 + 5/9 = ___
Show answer
Answer: 7/9
2/9 + 5/9: add numerators (2+5=7), keep denominator 9. Answer: 7/9.
Mia read 3/8 of a book on Monday and 2/8 on Tuesday. How much has she read in all?
1. 1/8
2. 5/8
3. 5/16
4. 6/8
Show answer
Answer: 5/8
3/8 + 2/8 = 5/8. Mia has read 5 out of 8 parts of the book.
8/10 − 5/10 = 3/10
Show answer
Answer: True
8/10 − 5/10: subtract numerators (8−5=3), keep denominator. Answer: 3/10.
6/7 − 2/7 = ___
Show answer
Answer: 4/7
6/7 − 2/7: subtract numerators (6−2=4), keep denominator 7. Answer: 4/7.