Adding and Subtracting Fractions with Unlike Denominators

What is the first step in adding or subtracting fractions with unlike denominators?

• Convert to a mixed number

• Add or subtract the numerators

• Find the least common multiple (LCM)

• Simplify the fraction

What does LCM stand for?

• Least Composite Multiple

• Lowest Common Multiplier

• Lowest Composite Multiplier

• Least Common Multiple

Tags

CCSS.6.NS.B.4

What is the common denominator of 4 and 7?

• 11

• 28

• 14

• 21

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

When adding fractions with unlike denominators, what do you keep the same?

• Numerators

• Denominators

• Both numerators and denominators

• Neither

How do you convert an improper fraction to a mixed number?

• Divide the numerator by the denominator

• Multiply the numerator by the denominator

• Subtract the denominator from the numerator

• Add the numerator to the denominator

Tags

CCSS.7.NS.A.1C

What is the result of 3/4 + 5/7?

• 2 6/28

• 41/28

• 8/11

• 1 13/28

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the first step in subtracting fractions with unlike denominators?

• Convert to a mixed number

• Subtract the numerators

• Find the LCM

• Simplify the fraction

Tags

CCSS.7.NS.A.1C

What is the result of 3/12 - 1/5?

• 1/20

• 2/15

• 3/60

• 1/10

How do you simplify the fraction 3/60?

• 1/20

• 1/10

• 3/20

• 1/30

Tags

CCSS.6.NS.B.4

What is the LCM of 5 and 12?

• 20

• 60

• 30

• 15

Tags

CCSS.6.NS.B.4