Adding and Simplifying Fractions B.Smith

What is the first step when adding or subtracting fractions with different denominators?

• Add or subtract the numerators.

• Find common denominators.

• Convert improper fractions.

• Keep the denominator.

When using the butterfly method for 2/5 + 1/4, what is the common denominator found by multiplying the original denominators?

• 9

• 13

• 20

• 40

What is the sum of 2/5 + 1/4?

• 7/20

• 8/20

• 13/20

• 15/20

What is the least common multiple (LCM) of 4 and 6?

• 4

• 6

• 12

• 24

What is the sum of 4/5 + 4/10, simplified to a mixed number?

• 1 and 1/5

• 1 and 2/10

• 12/10

• 8/10