Finding Least Common Denominators With Unlike Denominators

How do you find the common denominator when adding fractions with unlike denominators?

• By multiplying the denominators together

• By finding the greatest common factor

• By finding the least common multiple

• By adding the denominators together

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

The bottom number of a fraction is called the (a)  

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators

• add the denominators

• find a common denominator

• find a common numerator

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What must you have to add and subtract fractions?

• Common numerators

• Different numerators

• Different denominators

• Common denominators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the least common denominator you could use to change 1/3 and 1/4 into equivalent fractions?

• 3

• 4

• 24

• 12

What is the least common denominator for these fractions?

• 48

• 56

• 16

• 24

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

• 6

• 4

• 3

• 12

What is the least common denominator of 1/8 and 5/12?

• 12

• 24

• 8

• 96

What is the least common denominator for this problem?

• 6

• 12

• 18

• 24

Which fractions use the least common denominator and are equivalent to 5/8 and 7/10 ?

• 10/40 and 14/40

• 25/80 and 21/80

• 25/40 and 28/40

• 50/80 and 56/80