Adding and Subtracting Fractions and Mixed Numbers Unlike Denominators

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

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Add the fractions. Simplify if needed.

• 1

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 8/10

• 7/10

• 8/15

• 11/15

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum of these fractions in lowest terms?

• 7/18

• 7/9

• 12/9

• 12/81

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the difference of 3/4 and 2/3?

• 17/12

• 1/12

• 5/12

• 1/4

Tags

CCSS.7.NS.A.1C

Find the sum.

• 14/15

• 4/5

• 4/15

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum of 2/3 and 1/5?

• 9/10

• 5/15

• 13/15

• 7/15

Tags

CCSS.7.NS.A.1C

• 96/100

• 51/100

• 96/10

• 51/10

Tags

CCSS.4.NF.C.5

• 6      7/10
• 3/10
• -2   7/10
• 2    7/10

Tags

CCSS.7.NS.A.1C

Is this a correct answer?

• Yes, the student correctly added.

• No, you cannot add unlike denominators

• No, 5 + 7 is not 12

• No, 2 + 3 is not 5

Tags

CCSS.7.NS.A.1C