3/8- Quizizz- Operations with Fractions

Which operations with fractions REQUIRE common denominators.

• Addition

• Subtraction

• Multiplication

To stay healthy, we should drink 6 1/2 glasses of water a day. If we follow this guideline, how much water would we drink in a full week?

• 32 1/2 cups

• 45 cups

• 33 cups

• 45 1/2 cups

Check all fraction operations that required common denominators:

• addition

• subtraction

• multiplication

• division

• comparing fractions

When multiplying fractions, what should you do first? (2 answers!)

• make improper into mixed fractions

• make mixed into improper fractions

• make whole numbers into fractions over 1

• flip the 2nd fraction

The rule for division is

• flip stay flip

• keep change flip

• keep stay change

• flip change stay

When multiplying a whole number x a fraction, what do you need to do to the whole number?

• write it first

• write it 2nd

• write it over 1

• make it into an improper fraction

When multiplying fractions, what should you do first? (2 answers!)

• make improper into mixed fractions

• make mixed into improper fractions

• make whole numbers into fractions over 1

• flip the 2nd fraction

When multiplying, I should

• Keep change flip

• convert mixed to improper first

• convert improper to mixed first

• make all denominators common using LCM

Tomas and Hector are running at P.E. Tomas runs 3/4 of a mile. Hector runs 3 times as far as Tomas. How far did Hector run?

• 8 hours

• 15 minutes