Fraction Review: Key Concepts and Examples

Why is it necessary to have a common denominator when adding fractions?

• To ensure the fractions have the same base

• To make the numerators equal

• To simplify the fractions

• To convert fractions to decimals

What is the result of adding 5/6 and 1/6?

• 6/6

• 1/1

• 5/12

• 1/2

How do you find a common denominator for fractions with different denominators?

• Add the denominators

• Multiply the numerators

• Find the least common multiple of the denominators

• Subtract the denominators

What is the simplified form of 15/12?

• 5/4

• 3/2

• 4/5

• 12/15

Why should fractions be left in improper form?

• To make them easier to add

• To make them easier to divide

• To avoid converting to mixed numbers

• To simplify multiplication

When multiplying fractions, what is the correct method?

• Add the numerators and denominators

• Divide the numerators and multiply the denominators

• Multiply the numerators and add the denominators

• Multiply straight across the numerators and denominators

What is the product of 1/3 and 1/4?

• 1/7

• 1/4

• 1/3

• 1/12

How do you divide fractions?

• Multiply by the reciprocal of the second fraction

• Add the fractions

• Subtract the fractions

• Divide the numerators and denominators

What is the result of dividing 5/6 by 2/3?

• 1/2

• 15/12

• 5/9

• 10/18

What is the purpose of cross-canceling when multiplying fractions?

• To convert fractions to decimals

• To add the fractions

• To simplify the fractions before multiplying

• To find a common denominator