Fast Techniques for Adding and Subtracting Fractions

What is the first step in adding mixed numbers?

• Find the lowest common denominator

• Multiply the denominators

• Add the whole numbers first

• Convert them to improper fractions

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

• Multiply the whole number by the denominator and add the numerator

• Subtract the numerator from the whole number

• Add the whole number to the numerator

• Divide the numerator by the denominator

In the example of adding 2 1/2 and 3 1/3, what is the improper fraction for 2 1/2?

• 5/2

• 6/2

• 7/2

• 4/2

What is the common denominator used in the example of adding 2 1/2 and 3 1/3?

• 2

• 3

• 6

• 5

What is the result of adding 5 1/2 and 1 2/3 as an improper fraction?

• 43/6

• 23/6

• 53/6

• 33/6

How do you convert the improper fraction 43/6 back to a mixed number?

• Add 6 to 43 and write the remainder as the numerator

• Subtract 6 from 43 and write the remainder as the numerator

• Multiply 43 by 6 and write the remainder as the numerator

• Divide 43 by 6 and write the remainder as the numerator

In the example of subtracting 3 1/4 and 1 1/3, what is the improper fraction for 3 1/4?

• 11/4

• 12/4

• 13/4

• 10/4

What is the common denominator used in the example of subtracting 3 1/4 and 1 1/3?

• 4

• 3

• 12

• 6

What is the result of subtracting 6 1/2 and 3 3/4 as an improper fraction?

• 52/8

• 32/8

• 22/8

• 42/8

How do you simplify the improper fraction 22/8?

• Divide both the numerator and the denominator by 2

• Subtract 2 from both the numerator and the denominator

• Multiply both the numerator and the denominator by 2

• Add 2 to both the numerator and the denominator