Add and Subtract Fractions and Mixed Numbers with Unlike Denominators

USE SCRATCH PAPER AND SOLVE THIS WORD PROBLEM:

The classroom made cookies. They used 1 1/4 cups of white flour for the chocolate chip cookies. They used 2 1/3 cups of flour for peanut butter cookis. How much flour did they use in total?

• 3 2/7 cups

• 3 7/12 cups

• 1 1/12 cups

• 1 2/7 cups

USE SCRATCH PAPER AND SOLVE THIS MULTI-STEP PROBLEM: The 5th and 6th Grade Center served pizza on Tuesday. First Lunch Shift ate 2/5 of the pizzas. Second Lunch Shift ate 3/10 of the pizzas. How much pizza was remaining for Third Lunch Shift?

• 3/5

• 15/50

• 5/15

• 2/50

What is the sum of these fractions?

• 4/5

• 3/20

• 17/20

• 4/20

• 10 7/12
• 11 1/9
• 10 5/9
• 11 5/12

• 3/11
• 21/38
• 19/24
• 3/16

Sarem, Robin, and Braylan are sharing a pizza. Sarem eats 1/4 of the pizza, Robin eats 1/5 of the pizza, and Braylan eats 3/10 of the pizza. What fraction of the pizza is left?

• 4/5

• 3/20

• 17/20

• 4/20

What is the sum of these fractions in lowest terms?

• 4/5

• 3/20

• 17/20

• 4/20

Q1. What is the ratio of 14 to 16?

• 14/16

• 7/8

• 8/7

• 4/10

What is the Least Common Denominator of 1/5 + 2/10

• 5

• 10

• 50

• 15

What is the Least Common Denominator(LCD) of 2/3 + 1/2?

• 2

• 3

• 6

• 12