Alejandro wants to use the least common denominator to write equivalent fractions for 3/7 and 4/5 . He rewrites the fractions as 15/35 and 20/35 . How should he change his answer?

15/35 is correct, but 20/35 should be 28/35

The numerators are correct, but the denominators should be 7.

20/35 is correct, but 15/35 should be 21/25.

The denominators are correct, but both numerators should be 12.

How can you find the least common denominator for 1/8 and 2/9 ?

Counnt by 8 and 9 until you come to the first common multiple.

1 10 a n d 1 5 \frac{1}{10}\ \ \ \ \ \ \ \ and\ \ \ \ \ \ \ \frac{1}{5} 1 0 1 a n d 5 1 Use the least common denominator to write an equivalent fraction for each fraction. Choose the lowest common denominator. Choose the equivalent fractions.

1 10 ; 10 \frac{1}{10};\ 10 1 0 1 ; 1 0

2 10 ; 10 \frac{2}{10};\ 10 1 0 2 ; 1 0

2 20 ; 20 \frac{2}{20};\ 20 2 0 2 ; 2 0

4 20 ; 20 \frac{4}{20};\ 20 2 0 4 ; 2 0

1 3 a n d 2 9 \frac{1}{3}\ \ \ \ \ \ \ \ and\ \ \ \ \ \ \ \frac{2}{9} 3 1 a n d 9 2 Use the least common denominator to write an equivalent fraction for each fraction. Choose the lowest common denominator. Choose the equivalent fractions.

3 9 ; 9 \frac{3}{9};\ 9 9 3 ; 9

2 9 ; 9 \frac{2}{9};\ 9 9 2 ; 9

9 27 ; 27 \frac{9}{27};\ 27 2 7 9 ; 2 7

6 27 ; 27 \frac{6}{27};\ 27 2 7 6 ; 2 7

1 6 a n d 2 4 \frac{1}{6}\ \ \ \ \ \ \ \ and\ \ \ \ \ \ \ \frac{2}{4} 6 1 a n d 4 2 Use the least common denominator to write an equivalent fraction for each fraction. Choose the lowest common denominator. Choose the equivalent fractions.

6 12 ; 12 \frac{6}{12};\ 12 1 2 6 ; 1 2

2 12 ; 12 \frac{2}{12};\ 12 1 2 2 ; 1 2

12 24 ; 24 \frac{12}{24};\ 24 2 4 1 2 ; 2 4

4 24 ; 24 \frac{4}{24};\ 24 2 4 4 ; 2 4

2 3 a n d 1 2 \frac{2}{3}\ \ \ \ \ \ \ \ and\ \ \ \ \ \ \ \frac{1}{2} 3 2 a n d 2 1 Use the least common denominator to write an equivalent fraction for each fraction. Choose the lowest common denominator. Choose the equivalent fractions.

3 6 ; 6 \frac{3}{6};\ 6 6 3 ; 6

4 6 ; 6 \frac{4}{6};\ 6 6 4 ; 6

8 12 ; 12 \frac{8}{12};\ 12 1 2 8 ; 1 2

6 12 ; 12 \frac{6}{12};\ 12 1 2 6 ; 1 2

1 4 a n d 3 16 \frac{1}{4}\ \ \ \ \ \ \ \ and\ \ \ \ \ \ \ \frac{3}{16} 4 1 a n d 1 6 3 Use the least common denominator to write an equivalent fraction for each fraction. Choose the lowest common denominator. Choose the equivalent fractions.

4 16 ; 16 \frac{4}{16};\ 16 1 6 4 ; 1 6

3 16 ; 16 \frac{3}{16};\ 16 1 6 3 ; 1 6

8 32 ; 32 \frac{8}{32};\ 32 3 2 8 ; 3 2

6 32 ; 32 \frac{6}{32};\ 32 3 2 6 ; 3 2

2 5 a n d 3 4 \frac{2}{5}\ \ \ \ \ \ \ \ and\ \ \ \ \ \ \ \frac{3}{4} 5 2 a n d 4 3 Use the least common denominator to write an equivalent fraction for each fraction. Choose the lowest common denominator. Choose the equivalent fractions.

15 20 ; 20 \frac{15}{20};\ 20 2 0 1 5 ; 2 0

8 20 ; 20 \frac{8}{20};\ 20 2 0 8 ; 2 0

16 40 ; 40 \frac{16}{40};\ 40 4 0 1 6 ; 4 0

30 40 ; 40 \frac{30}{40};\ 40 4 0 3 0 ; 4 0

2 15 a n d 5 6 \frac{2}{15}\ \ \ \ \ \ \ \ and\ \ \ \ \ \ \ \frac{5}{6} 1 5 2 a n d 6 5 Use the least common denominator to write an equivalent fraction for each fraction. Choose the lowest common denominator. Choose the equivalent fractions.

25 30 ; 30 \frac{25}{30};\ 30 3 0 2 5 ; 3 0

4 30 ; 30 \frac{4}{30};\ 30 3 0 4 ; 3 0

8 60 ; 60 \frac{8}{60};\ 60 6 0 8 ; 6 0

50 60 ; 60 \frac{50}{60};\ 60 6 0 5 0 ; 6 0

7 8 a n d 1 2 \frac{7}{8}\ \ \ \ \ \ \ \ and\ \ \ \ \ \ \ \frac{1}{2} 8 7 a n d 2 1 Use the least common denominator to write an equivalent fraction for each fraction. Choose the lowest common denominator. Choose the equivalent fractions.

7 8 ; 8 \frac{7}{8};\ 8 8 7 ; 8

4 8 ; 8 \frac{4}{8};\ 8 8 4 ; 8

14 16 ; 16 \frac{14}{16};\ 16 1 6 1 4 ; 1 6

8 16 ; 16 \frac{8}{16};\ 16 1 6 8 ; 1 6

5.4 Common Denominators and Equivalent Fractions

Quiz

•

Mathematics

•

5th Grade

•

Practice Problem

•

Medium

•

CCSS

4.NF.A.2, 4.NF.A.1, 4.OA.B.4

+9

Standards-aligned

AILEEN MAHON

Used 95+ times

FREE Resource

29 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the least common denominator of 1/7 and 3/6?

14

21

7

42

Tags

CCSS.4.NF.A.2

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the least common denominator of 6/8 and 4/12?

12

24

8

16

Tags

CCSS.4.NF.A.2

CCSS.4.OA.B.4

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the least common denominator of 2/6 and 7/8?

36

8

18

24

Tags

CCSS.4.NF.A.2

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the least common denominator of 1/4 and 1/3?

4

3

12

8

Tags

CCSS.4.NF.A.2

CCSS.4.OA.B.4

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the least common denominator of 1/4 and 2/5?

5

25

10

20

Tags

CCSS.4.NF.A.2

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

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

32

12

8

24

Tags

CCSS.4.NF.A.2

CCSS.4.OA.B.4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The number on the top of a fraction is called what?

numerator

denominator

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

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5.4 Common Denominators and Equivalent Fractions

29 questions

What is the least common denominator of 1/7 and 3/6?

What is the least common denominator of 6/8 and 4/12?

What is the least common denominator of 2/6 and 7/8?

What is the least common denominator of 1/4 and 1/3?

What is the least common denominator of 1/4 and 2/5?

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

The number on the top of a fraction is called what?

The number on the bottom of a fraction is called what?

Complete the equivalent fraction.

Magara entered the fractions 1/4 and 7/ __ into a computer program. The computer used the least common denominator to rename the fractions as 5/20 and 14/20 . What is the unknown denominator?

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5.4 Common Denominators and Equivalent Fractions

29 questions

What is the least common denominator of 1/7 and 3/6?

What is the least common denominator of 6/8 and 4/12?

What is the least common denominator of 2/6 and 7/8?

What is the least common denominator of 1/4 and 1/3?

What is the least common denominator of 1/4 and 2/5?

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

The number on the top of a fraction is called what?

The number on the bottom of a fraction is called what?

Complete the equivalent fraction.

Magara entered the fractions 1/4 and 7/ __ into a computer program. The computer used the least common denominator to rename the fractions as 5/20 and 14/20 . What is the unknown denominator?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

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