Adding and Subtracting Fractions with Uncommon Denominator

What is the first step to add or subtract fractions with different denominators?

• Multiply the numerators

• Find a common denominator

• Convert the fractions to have the same numerator

• Add or subtract the denominators

What is the first step in adding or subtracting fractions?

• Divide the denominators

• Add the numerators

• Multiply the numerators

• Find a common denominator

What is a fundamental concept that represents parts of a whole?

• Integers

• Decimals

• Fractions

• Variables

What is the first step for adding or subtracting fractions?

• Add or subtract the numerators

• Ensure the fractions have the same denominator

• Simplify the resulting fraction

• Find a common denominator

What should be done after finding a common denominator?

• Multiply the denominators

• Add or subtract the numerators

• Multiply the numerators

• Divide the denominators

What is the easiest way to find a common denominator?

• Add the denominators

• Divide the denominators

• Multiply the denominators

• Multiply the numerators

1/2 - 1/4 =

• 3/4

• 1/4

• 1

• 1/2

3/4 - 3/5 =

• 6/9

• 9/20

• 15/20

• 3/20

1/2 + 1/4 =

• 3/4

• 2/6

• 6/8

• 1

• 5

• 4

• 20

• 10