Free Printable Adding fraction with unlike denominators

1.

What must you have to add and subtract fractions?

a)

Common numerators

b)

Different numerators

c)

Different denominators

d)

Common denominators

2.

What is a good common denominator for this problem?

\frac{3}{9}+\frac{1}{6}

a)

18

b)

9

c)

24

d)

12

3.

What is a good common denominator for this problem?

\frac{1}{8}+\frac{5}{6}

a)

24

b)

18

c)

32

d)

16

4.

Billy ate $\frac{1}{4}$ of a pizza and Felicity ate $\frac{1}{4}$ of the pizza. How much pizza did they eat in all?

a)

$\frac{1}{2}$

b)

$\frac{5}{8}$

c)

$\frac{3}{4}$

5.

What number could be a common denominator for these three fractions?

\frac{1}{2}\ and\ \frac{1}{3}\ and\ \frac{1}{4}

a)

9

b)

8

c)

12

d)

6

6.

Which of these numbers could NOT be a common denominator for these two fractions?

\frac{1}{6}\ and\ \frac{1}{4}

a)

12

b)

18

c)

24

d)

36

7.

$\frac{1}{2}+\frac{1}{4}=$

a)

$\frac{3}{4}$

b)

$\frac{2}{4}$

c)

$\frac{3}{6}$

d)

$\frac{2}{6}$

8.

James is helping his dad paint his house. They mixed $\frac{5}{9}$ gallons of white paint and $\frac{1}{6}$ gallons of blue pain. How many gallons was the mixture in all?

a)

$\frac{6}{18}$ gallons

b)

$\frac{13}{18}$ gallons

c)

$\frac{4}{5}$ gallons

d)

$\frac{1}{6}$ gallons

9.

$\frac{1}{4}+\frac{2}{3}$

a)

$\frac{3}{12}$

b)

$\frac{3}{4}$

c)

$\frac{11}{12}$

d)

$\frac{3}{7}$

10.

$\frac{5}{12}+\frac{1}{6}$

a)

$\frac{6}{18}$

b)

$\frac{6}{12}$

c)

$\frac{3}{4}$

d)

$\frac{7}{12}$

11.

What is a numerator?

a)

a whole number

b)

top number in a fraction

c)

bottom number in the fraction

d)

the term for a larger top number than bottom number

12.

$\frac{1}{3}+\frac{3}{9}\$ in simplest form (you must simplify your answer!)

a)

$\frac{6}{9}$

b)

$\frac{1}{3}$

c)

$\frac{2}{3}$

d)

$\frac{4}{9}$

13.

Write the mixed number as an improper fraction

5 ⁶/₇

(a)

14.

Write the mixed number as an improper fraction

3 ⁴/₉

(a)

15.

Write the mixed number as an improper fraction

4 ⁵/₈

(a)

16.

Write the mixed number as an improper fraction

4 ⁵/₈

(a)

17.

a)

1

b)

3

c)

9

d)

8

18.

Write the improper fraction as a mixed number

¹²/₄

a)

3 ³/₄

b)

3 ¹/₄

c)

3

d)

4

19.

Which symbol is correct for these two fractions?

a)

>

b)

<

c)

=

20.

What fractions corresponds with point C

a)

⁴/₂

b)

1 ³/₈

c)

⁹/₄

d)

¹/₂

e)

3³/₄

21.

Convert to a mixed number.

a)

2 2/5

b)

1 7/5

c)

7 1/5

22.

Write the improper fraction as a mixed number

²²/₃

a)

7 ²/₃

b)

7 ¹/₃

c)

7 ¹/₄

d)

7 ³/₄

23.

Write the improper fraction as a mixed number

³⁶/₄

a)

9 ¹/₄

b)

9 ³/₄

c)

8 ⁴/₄

d)

9

24.

Write the improper fraction as a mixed number

²³/₅

a)

4 ³/₅

b)

4 ⁵/₃

c)

5 ³/₄

d)

4 ³/₄

25.

SUBTRACTION MIXED FRACTION

9 7/8 - 2 5/8

a)

7 2/8

b)

2 8/8

c)

7 1/4

d)

3 2/8

26.

What do you need to have when adding unlike fractions

a)

common denominator

b)

common numerator

c)

common numerator and denominator

d)

common fractions

27.

3/10 X 2/4

a)

5/14

b)

3/20

c)

6/14

d)

6/40

28.

Which symbol is correct for these two fractions?

a)

>

b)

<

c)

=

29.

What fractions corresponds with point C

a)

⁴/₂

b)

1 ³/₈

c)

⁹/₄

d)

¹/₂

e)

3³/₄

30.

Write the improper fraction as a mixed number

³⁶/₄

a)

9 ¹/₄

b)

9 ³/₄

c)

8 ⁴/₄

d)

9

31.

Which symbol is correct for these two fractions?

a)

>

b)

<

c)

=

32.

What fractions corresponds with point C

a)

⁴/₂

b)

1 ³/₈

c)

⁹/₄

d)

¹/₂

e)

3³/₄

33.

a)

12/17

b)

17/20

c)

20/17

d)

2 1/2

34.

a)

9 5/7

b)

5 2/3

c)

10 1/5

d)

11 5/6

35.

a)

14 17/30

b)

13 47/30

c)

1/2

d)

15 2/3

36.

Convert into an improper fraction.

a)

15/2

b)

10/5

c)

17/5

d)

11/2

37.

Convert into an improper fraction.

a)

28/7

b)

29/4

c)

29/7

d)

7/1

38.

Convert the mixed fraction to a improper fraction.

a)

30 /8

b)

32 /8

c)

34 /8

d)

28 /8

39.

a)

1

b)

3/6

c)

1/2

d)

2

40.

a)

2/5

b)

5/6

c)

4/6

d)

1/5

41.

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

a)

12

b)

18

c)

24

d)

36

42.

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

a)

30

b)

11

c)

6

d)

5

43.

a)

13/15

b)

1 7/12

c)

1

d)

9/15

44.

a)

- 3/56

b)

18/56

c)

- 4/15

d)

29/56

45.

Is this a correct answer?

a)

Yes, the student correctly added.

b)

No, you cannot add unlike denominators

c)

No, 5 + 7 is not 12

d)

No, 2 + 3 is not 5

46.

a)

12/17

b)

17/20

c)

20/17

d)

2 1/2

47.

a)

2/5

b)

5/6

c)

4/6

d)

1/5

48.

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

a)

30

b)

11

c)

6

d)

5

49.

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

a)

12

b)

18

c)

24

d)

36

50.

a)

22/20

b)

11/10

c)

1 1/12

d)

1 10/11

51.

a)

4/9

b)

1/4

c)

3/12

d)

5/9

52.

3/8 + 2/4 =

a)

5/12

b)

5/8

c)

7/8

d)

6/8

53.

2/6 + 1/2 =

a)

5/6

b)

3/6

c)

4/6

d)

3/8

54.

1/4 + 3/8 =

a)

5/8

b)

3/8

c)

4/12

d)

4/8

55.

4/8 + 1/3 =

a)

5/11

b)

4/8

c)

20/24

d)

4/11

56.

Aden is helping his dad paint his house. They mixed 5/9 gallons of white paint and 1/6 gallons of blue paint. How many gallons was the mixture in all?

a)

6/18 gallons

b)

13/18 gallons

c)

4/5 gallons

d)

1/6 gallons

57.

5/10 + 8/5

a)

5/9

b)

1/10

c)

21/10

d)

22/10

58.

1 1/2 + 1/4 =

a)

1 1/4

b)

1 2/4

c)

3/6

d)

1 3/4

59.

1/18 + 5/6 =

a)

15/19

b)

16/19

c)

16/18

d)

15/18

60.

3/7 + 6/14 =

a)

5/7

b)

12/14

c)

13/14

d)

15/14

61.

Find the Least Common Multiple of 8 and 12.

4 lines

62.

\frac{\text{1}}{\text{6}}\ +\ \frac{2}{5}

4 lines

63.

$\frac{1}{2}\ +\ \frac{2}{7}$

4 lines

64.

Convert

\frac{17}{12}

to a mixed number

4 lines

65.

$\frac{2}{5\ }\ +\ \frac{5}{6}$

4 lines

66.

$\frac{1}{6}\ +\ \frac{5}{8}$

4 lines

67.

$\frac{3}{4}\ +\ \frac{5}{12}$

Be sure to check if the sum is an improper fraction. If it is improper, convert it to a mixed number.

4 lines

68.

Choose 2 possible common denominators for these fractions.

5/6 and 3/8.

a)

24

b)

18

c)

48

d)

36

e)

56

69.

Why is 24 a better choice for a common denominator than 48?

(a)

70.

If you are adding the fractions ⅕ + ¾ , the LCM is 20. What are the new, equivalent fractions.

a)

$\frac{1}{20}+\frac{3}{20}$

b)

$\frac{4}{20}+\frac{15}{20}$

c)

$\frac{10}{20}+\frac{15}{20}$

d)

$\frac{4}{20}+\frac{12}{20}$

71.

Find the common denominator and equivalent fractions for this equation.

\frac{4}{5}+\frac{1}{3}

4 lines

72.

Find the common denominator and equivalent fractions for this equation.

\frac{2}{7}+\frac{2}{3}

4 lines

73.

$\frac{1}{4}+\frac{2}{3}=$

4 lines

74.

$\frac{3}{4}+\frac{5}{6}=$

4 lines

75.

$\frac{4}{5}+\frac{5}{6}=$

a)

$\frac{9}{30}$

b)

$\frac{25}{24}$

c)

$\frac{49}{30}$

d)

$\frac{9}{11}$

76.

$\frac{1}{4}+\frac{5}{6}=$

a)

$\frac{26}{24}$

b)

$\frac{13}{12}$

c)

$\frac{6}{24}$

d)

$\frac{6}{10}$

77.

$\frac{3}{4}+\frac{2}{5}=$

a)

$\frac{6}{20}$

b)

$\frac{6}{9}$

c)

$\frac{19}{14}$

d)

$\frac{21}{20}$

78.

$\frac{1}{4}+\frac{3}{8}=$

a)

$\frac{4}{8}$

b)

$\frac{5}{8}$

c)

$\frac{7}{5}$

d)

$\frac{4}{12}$

79.

$\frac{2}{3}+\frac{1}{9}=$

a)

$\frac{7}{9}$

b)

$\frac{3}{12}$

c)

$\frac{5}{4}$

d)

$\frac{3}{27}$

80.

What is 1/4 + 2/4?

a)

3/4

b)

1/4

c)

4/4 (or 1)

d)

2/4

81.

\frac{12}{17\ }-\frac{5}{17}

a)

4/17

b)

7/17

c)

2/17

d)

9/17

82.

What is the Least Common Denominator?

$\frac{1}{5}+\frac{2}{10}$

a)

5

b)

10

c)

15

d)

20

83.

What is the Least Common Denominator?

\frac{3}{4}+\frac{1}{3}

a)

3

b)

4

c)

12

d)

16

84.

Solve the following practice problem.

$\frac{1}{5}+\frac{1}{2}$

a)

$\frac{7}{10}$

b)

$\frac{4}{8}$

c)

$\frac{6}{7}$

d)

$\frac{8}{9}$

85.

Solve the following practice problem.

$\frac{2}{9}+\frac{1}{3}$

a)

$\frac{3}{9}$

b)

$\frac{8}{9}$

c)

$\frac{5}{9}$

d)

$\frac{3}{7}$

86.

$\frac{1}{3}\ +\ \frac{1}{4}\ =\$

a)

$\frac{2}{7}$

b)

$\frac{7}{12}$

c)

$\frac{1}{12}$

d)

$\frac{11}{12}$

87.

$\frac{3}{8}\ +\ \frac{1}{4}\ =$

a)

$\frac{11}{16}$

b)

$\frac{3}{32}$

c)

$\frac{5}{8}$

d)

$\frac{4}{12}$

88.

$\frac{1}{6}\ +\ \frac{3}{8}\ =$

a)

$\frac{13}{24}$

b)

$\frac{4}{14}$

c)

$\frac{2}{7}$

d)

$\frac{3}{48}$

89.

$\frac{7}{16}\ +\ \frac{1}{4}\ =$

a)

$\frac{7}{64}$

b)

$\frac{13}{16}$

c)

$\frac{8}{20}$

d)

$\frac{2}{5}$

90.

$\frac{3}{10\ }\ +\ \ \frac{3}{5}\ =$

a)

$\frac{9}{50}$

b)

$\frac{2}{5}$

c)

$\frac{9}{10}$

d)

$\frac{6}{15}$

91.

$\frac{1}{2}\ +\ \frac{2}{9}\ =$

a)

$\frac{2}{18}$

b)

$\frac{3}{18}$

c)

$\frac{1}{9}$

d)

$\frac{13}{18}$

92.

$\frac{11}{20}\ +\ \frac{2}{5}\ =\$

a)

$\frac{19}{20}$

b)

$\frac{13}{25}$

c)

$\frac{22}{100}$

d)

$\frac{9}{10}$

93.

$\frac{3}{7}\ +\ \frac{2}{5}\ =$

a)

$\frac{5}{12}$

b)

$\frac{6}{35}$

c)

$\frac{30}{35}$

d)

$\frac{29}{35}$

94.

$\frac{3}{12}\ +\ \frac{5}{8}\ =$ Simplify.

a)

$\frac{21}{24}$

b)

$\frac{7}{8}$

c)

$\frac{8}{20}$

d)

$\frac{2}{5}$

95.

Of the soccer balls in the gym storage closet, 1/12 are yellow and 5/8 are white. What fraction of the soccer balls are yellow or white?

a)

$\frac{5}{20}$

b)

$\frac{1}{4}$

c)

$\frac{17}{24}$

d)

$\frac{6}{20}$

96.

Rashid planted squash in 1/3 of his garden. He planted tomatoes in 2/5 of his garden. What fraction of Rashid’s garden is squash or tomatoes?

a)

$\frac{10}{15}$

b)

$\frac{2}{3}$

c)

$\frac{12}{15}$

d)

$\frac{11}{15}$

97.

Nan bought two kinds of cheese. She bought 1/2 pound of Swiss and 3/8 pound of cheddar. How much cheese did she buy altogether?

a)

$\frac{7}{8}$

b)

$\frac{6}{8}$

c)

$\frac{3}{4}$

d)

$\frac{5}{8}$

Adding fraction with unlike denominators

Total questions: 97

Worksheet time: 10hrs 51mins

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