Problem Solving Fraction Operations

Which operations with fractions REQUIRE common denominators. Select 2 answers

• Addition

• Subtraction

• Multiplication

• Division

• None of the 4 basic operations

• 1/4

• 9/16

• 5/11

• 6/24

During lunch, Julio drinks 2  3/4 cups of milk.  Alan drinks 3/8 cups of milk.  Fernando drinks 1  1/6 cups of milk.  How much milk do the 3 gentleman drink? 

• 4  7/24 cups

• 3  7/32 cups

• 4  7/32 cups 

• 3  7/24 cups

What is the first step in solving this problem? 
⅘ + ½ =

• Add the top parts of the fraction

• Rewrite the fractions in the simplest form. 

• Find a common denominator. 

• Make each fraction into an improper faction. 

What must you have to add and subtract fractions?

• Common numerators

• Different numerators

• Different denominators

• Common denominators

What is the least common denominator you could use to subtract 1/3 and 1/4?

• 3

• 4

• 24

• 12