Adding and Subtracting Fractions Quiz

Grade 5 · Math · Quiz

Test your understanding of adding and subtracting fractions with unlike denominators.

Questions

1. What is 1/2 + 1/3?

   1. 2/5
   2. 2/6
   3. 5/6
   4. 3/6
   Show answer

   Answer: 5/6

   LCD is 6. 1/2=3/6, 1/3=2/6. 3/6+2/6=5/6.

2. What is 3/5 - 1/2?

   1. 2/3
   2. 1/10
   3. 2/7
   4. 1/5
   Show answer

   Answer: 1/10

   LCD is 10. 3/5=6/10, 1/2=5/10. 6/10-5/10=1/10.

3. What is 2/3 + 1/4?

   1. 3/7
   2. 11/12
   3. 3/12
   4. 7/12
   Show answer

   Answer: 11/12

   LCD is 12. 2/3=8/12, 1/4=3/12. 8/12+3/12=11/12.

4. What is 5/8 - 1/4?

   1. 4/4
   2. 3/8
   3. 1/2
   4. 4/8
   Show answer

   Answer: 3/8

   LCD is 8. 1/4=2/8. 5/8-2/8=3/8.

5. What is 1/6 + 2/3?

   1. 3/9
   2. 5/6
   3. 1/2
   4. 3/6
   Show answer

   Answer: 5/6

   LCD is 6. 2/3=4/6. 1/6+4/6=5/6.

6. 3/4 + 1/6 = ___

   Show answer

   Answer: 11/12

   LCD is 12. 3/4=9/12, 1/6=2/12. 9/12+2/12=11/12.

7. 7/8 - 1/2 = ___

   Show answer

   Answer: 3/8

   LCD is 8. 1/2=4/8. 7/8-4/8=3/8.

8. 2/5 + 3/10 = ___

   Show answer

   Answer: 7/10

   LCD is 10. 2/5=4/10. 4/10+3/10=7/10.

9. Simplify 6/9 to lowest terms.

   1. 3/4
   2. 2/3
   3. 1/3
   4. 4/6
   Show answer

   Answer: 2/3

   GCF of 6 and 9 is 3. 6÷3=2, 9÷3=3. Simplified: 2/3.

10. Maria ate 1/4 of a pizza and her brother ate 1/3. How much did they eat together?

    1. 2/7
    2. 7/12
    3. 5/12
    4. 1/2
    Show answer

    Answer: 7/12

    LCD is 12. 1/4=3/12, 1/3=4/12. 3/12+4/12=7/12.

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