Adding and Subtracting Mixed Numbers: Key Concepts and Examples

What is the first step when the fraction part of the smaller number is bigger than the fraction part of the larger number in a subtraction problem?

• Subtract the whole numbers directly

• Rename the larger number with a bigger fraction

• Add the fractions first

• Convert both numbers to improper fractions

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

How can you rewrite 2 and 1/3 to make the fraction part larger?

• 1 and 4/3

• 2 and 2/3

• 3 and 1/3

• 1 and 3/3

What is 2 and 1/3 converted to an improper fraction?

• 8/3

• 5/3

• 7/3

• 6/3

Why might converting to improper fractions not be the best strategy for large numbers?

• It doesn't work for mixed numbers

• It is too simple

• It is always incorrect

• It requires a calculator

What is the improper fraction form of 7?

• 14/1

• 7/1

• 14/2

• 7/2

Tags

CCSS.3.NF.A.3C

What is the result of 14/2 - 3/2?

• 11/2

• 10/2

• 12/2

• 13/2

Tags

CCSS.7.NS.A.1C

What is the first step in the flowchart for adding and subtracting mixed numbers?

• Rename the fractions

• Check for negative numbers

• Convert to improper fractions

• Find common denominators

Tags

CCSS.7.NS.A.1C

What is the least common denominator for 9 and 6?

• 24

• 18

• 12

• 36

What is 9 and 2/18 renamed to for easier subtraction?

• 9 and 18/18

• 8 and 18/18

• 8 and 20/18

• 9 and 20/18

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the final answer for -7/8 - 4 and 4/5?

• -4 and 27/40

• -5 and 27/40

• -4 and 67/40

• -5 and 67/40

Tags

CCSS.7.NS.A.1C