U5: Lesson 7 Adding and Subtracting Mixed Numbers

What is a requirement in order to add mixed numbers?

• Must have the same denominator.

• Must have the same numerator.

• Must turn into improper fractions.

• Must draw a picture of the fraction.

Tags

CCSS.7.NS.A.1C

Answer explanation

What is the only even prime number?

2

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

After completing any fraction problem also check to see if you can do what?

• find a common denominator

• simplify

• add more to the numerator

• cancel numbers

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

9 2/5 + 6 7/10=

• 16 1/10

• 15 11/10

• 15 9/10

• 16 2/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

6 7/11 + 5 1/2 =

• 1 3/22

• 11 25/22

• 13 3/22

• 12 3/22

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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.5.NF.A.1

CCSS.5.NF.A.2

A recipe calls for 2 2/4 cups of walnuts and 3 3/8 cups of pecans. How many cups of nuts are needed in all for the recipe?

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

  7  3/15  -  3  4/5

• 3  1/5
• 3  4/5
• 3  2/5
• 3  3/5

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2