Quiz about Adding and Subtracting Fractions

Question 1

What do you need to have when adding unlike fractions?

Accepted Answer

common denominator

Answer

common numerator

Answer

common numerator and denominator

Question 2

What number could be a common denominator for these two fractions?
2/3 and 3/4

Accepted Answer

12

Answer

3

Answer

4

Answer

7

Question 3

What number could be a common denominator for these two fractions?
1/5 and 5/6?

Accepted Answer

30

Answer

11

Answer

6

Answer

5

Question 4

What number could be a common denominator for these two fractions?
3/10 and 1/5

Accepted Answer

10

Answer

5

Answer

15

Answer

These numbers do not have a common denominator

Question 5

What number could be a common denominator for these three fractions?
1/2 and 1/3 and 1/4

Accepted Answer

12

Answer

9

Answer

8

Answer

6

Question 6

Which of these numbers could NOT be a common denominator for these two fractions?
1/3 and 3/6

Accepted Answer

3

Answer

6

Answer

12

Answer

18

Question 7

Which of these numbers could NOT be a common denominator for these two fractions?
2/4 and 3/8

Accepted Answer

12

Answer

32

Answer

8

Answer

24

Question 8

Which of these numbers could NOT be a common denominator for these three fractions?
1/3 and 2/5 and 3/10

Accepted Answer

15

Answer

30

Answer

60

Answer

90

Question 9

Which of these numbers could NOT be a common denominator for these two fractions?
1/6 and 1/4

Accepted Answer

18

Answer

12

Answer

24

Answer

36

Question 10

3/9 + 4/9

Accepted Answer

7/9

Answer

7/18

Answer

12/9

Answer

12/81

Question 11

2/3 + 1/2 =

Accepted Answer

7/6

Answer

6/7

Answer

2/6

Answer

3/5

Question 12

3/4 + 2/8 =

Accepted Answer

1

Answer

5/12

Answer

6/32

Answer

5/8

Question 13

5/7 + 1/28 =

Accepted Answer

21/28

Answer

6/35

Answer

12/196

Answer

1

Question 14

1/2 + 1/3 + 1/5 =

Accepted Answer

31/30

Answer

3/10

Answer

1/30

Answer

These fractions cannot be added

Question 15

8/9 - 1/3 =

Accepted Answer

5/9

Answer

7/6

Answer

2/3

Answer

8/27

Question 16

5/8 + 5/8

Accepted Answer

10/8

Answer

10/16

Answer

5/16

Answer

8/10

Question 17

4/5 - 1/20 =

Accepted Answer

15/20

Answer

0

Answer

20/15

Answer

3/15

Question 18

Jared ate 2/8 of his pizza for lunch and 3/8 of his pizza for supper. How much of his pizza is left?

Accepted Answer

3/8

Answer

5/8

Answer

1/8

Answer

5/16

Question 19

Compute leaving answer in simplest form: 9/12 + 3/12

Accepted Answer

1

Answer

12/2

Answer

12

Answer

1/2

Question 20

What is the Lowest Common Denominator of 1/5 + 2/10

Accepted Answer

10

Answer

5

Answer

50

Answer

15

Question 21

What is the Lowest Common Denominator(LCD) of 2/3 + 1/2?

Accepted Answer

6

Answer

2

Answer

3

Answer

12

Question 22

Whatever you do to the bottom of the fraction, you must do to the top.

Accepted Answer

true

Answer

false

Question 23

What is the LCD between 5/7 and 3/5?

Accepted Answer

35

Answer

21

Answer

12

Answer

42

Question 24

What is the sum of 1/2 + 1/3 + 1/6?

Accepted Answer

1

Answer

3/14

Answer

3/11

Answer

6/8

Question 25

Bart made potato salad for a picnic. He used 1/4 cup fewer onions than the recipe called for. If the recipe called for 7/8 cup of onions, what amount of onions did Bart use?

Accepted Answer

5/8 cup

Answer

3/8 cup

Answer

1 1/2 cups

Answer

3/4 cup

Question 26

Joel made some muffins. He gave 1/4 of the muffins to a neighbor. He took 3/8 of the muffins to school. What fraction of the muffins did he have left?

Accepted Answer

3/8

Answer

4/12

Answer

5/12

Answer

8/8

Question 27

Bobby has 3/4 of a cake. If he shares a 1/8 slice with Morgan, how much does he have left?

Accepted Answer

5/8

Answer

4/8

Answer

3/4

Answer

7/8

Question 28

Daniel watched a beetle and a spider on the sidewalk. The beetle crawled 1/2 of a yard and the spider crawled 1/6 of a yard. How much farther did the beetle crawl than the spider?

Accepted Answer

1/3

Answer

1/4

Answer

1/2

Answer

2/3

Question 29

Carefully following a recipe, Ben used exactly 5/8 of a cup of oil and 3/4 of a cup of water. How many cups of liquid did Ben use in all?

Accepted Answer

1 3/8

Answer

1/8

Answer

2/3

Answer

1 1/2

Question 30

When Sierra gets home 1/2 of a sandwich is left in the refrigerator.  She cuts the remaining part into 3 equal size pieces and eats one of them.  What fraction of the whole sandwich did she eat?

Accepted Answer

1/6

Answer

3/12

Answer

5/7

Answer

4/7

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