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How to Subtract Three Fractions with Different Denominators

Question 10

What is the result of subtracting the numerators 35 - 15 - 18 with a common denominator of 45?

A.2

B.2/45

C.20/45

D.22/45

Question 1

What is a simple way to find a common denominator for three fractions with different denominators?

A.Multiply the three denominators together

B.Find the greatest common divisor of the denominators

C.Use the least common multiple of the denominators

D.Divide the three denominators by their greatest common divisor

Question 2

What is the least common multiple of 6, 5, and 4?

A.30

B.60

C.120

D.180

Question 3

When you multiply the numerator and denominator of a fraction by the same number, what is the result?

A.The fraction remains the same

B.The fraction changes

C.The fraction is simplified

D.The fraction is reduced

Question 4

How can you simplify the fraction 22/120?

A.Divide both the numerator and denominator by 2

B.Divide both the numerator and denominator by 4

C.Divide both the numerator and denominator by 5

D.Divide both the numerator and denominator by 10

Question 5

What is the common denominator for the fractions 7/9, 1/3, and 2/5?

A.45

B.135

C.180

D.360

Question 6

What is the result of subtracting 7/9, 1/3, and 2/5 with a common denominator of 45?

A.2/45

B.7/45

C.8/45

D.9/45

Question 7

Why is it important to have the same denominator when subtracting fractions?

A.To make the numerators the same

B.To make the denominators the same

C.To simplify the fractions

D.To find the greatest common divisor

Question 8

What is the result of subtracting the numerators 100 - 48 - 30?

A.22

B.20

C.10

D.12

Question 9

How can you simplify the fraction 11/60?

A.It cannot be simplified

B.Divide both the numerator and denominator by 2

C.Divide both the numerator and denominator by 3

D.Divide both the numerator and denominator by 5