Mastering Addition of Fractions with Unlike Denominators

What is the first step in adding fractions with different denominators?

• Find a common denominator

• Multiply the numerators

• Reduce the fractions

• Add the denominators directly

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the least common multiple (LCM) of 10 and 6?

• 12

• 60

• 30

• 20

After finding the common denominator, what is 9/10 equivalent to?

• 18/60

• 9/30

• 27/30

• 45/50

What is the simplified form of 32/30?

• 2/1

• 8/15

• 16/15

• 32/15

What mixed number does 16/15 convert to?

• 2 1/15

• 1 1/15

• 1 1/30

• 1 2/15

What is the least common multiple of 2 and 12?

• 6

• 4

• 12

• 24

After conversion, what is 1/2 equivalent to with a denominator of 12?

• 2/12

• 6/12

• 12/24

• 1/6

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the result of adding 1/2 and 11/12?

• 17/12

• 12/24

• 1 5/12

• 23/12

Tags

CCSS.7.NS.A.1C

What is the least common multiple of 4 and 5?

• 40

• 8

• 20

• 10

What is the final result of adding 3/4 and 1/5?

• 19/20

• 18/20

• 22/25

• 4/9

Tags

CCSS.7.NS.A.1C