Adding and Subtracting Mixed Numbers with Different Denominators

After changing the denominator, what do you need to do to the numerator?

• Nothing

• Multiply the numerator by the same number as the denominator

• Double it

3 2/7 + 8 1/3

The gas tank in Rebecca’s old car held 14 1/5 gallons. The gas tank in Rebecca’s new car holds 18 1/2 gallons. How many more gallons will the tank in Rebecca’s new car hold than her old car?

When adding and subtracting fractions, what needs to be the same?

• the numerator

• the denominator

• nothing

• everything

What is 2 1/3 + 1 1/3?

• 1

• 2

• 2 1/3

• 3 2/3

When talking about the LAPS strategy for adding and subtracting mixed numbers, what does the L stand for?

• Lunch

• Look (and Line Up)

• Language

• Listen

What number do we need in order to find a common denominator for two or more fractions?

• my age

• the LCM (Least Common Multiple)

• the numerator

• the GCF (Greatest Common Factor)

When talking about the LAPS strategy for adding and subtracting mixed numbers, what does the P stand for?

• Perform

• Pineapple

• Parse

• Plan

When talking about the LAPS strategy for adding and subtracting mixed numbers, what does the S stand for?

• Subtract

• Simplify

• Substitute

• Sleep

Ms. Jones ordered a pizza and ate half of it. Her husband brought home 3/4 of a pizza from work. How much pizza do they have altogether in the Jones fridge?

• 1/2 pizza

• 3/4 pizza

• 1 pizza

• 1 1/4 pizza