Add and Subtract Negative Unlike Fractions

Following the integer rules, would you add or subtract the fractions?

• add

• subtract

Tags

CCSS.7.NS.A.1C

Following the integer rules, would you add or subtract the fractions?

• add, the answer would be positive

• add, the answer would be negative

• subtract, the answer will be positive

• subtract the answer will be negative

Tags

CCSS.7.NS.A.1C

(Choose one that is true) When you add or subtract fractions with unlike denominators you..

• Add both the numerators and denominators

• Change the denominator by picking a random number then divide

• Find the least common multiple of both denominators

• none of these are true

Tags

CCSS.7.NS.A.1C

3/10 - (-1/4)

• 11/20

• 3/15

• 15/20

• 3/4

Tags

CCSS.7.NS.A.1C

(-7/8) + 1/3

• -13/24

• -11/24

• 11/12

• 12/24

Tags

CCSS.7.NS.A.1C

(-1/15) + (-3/5)

• -2/3

• 2/3

• 1/4

• -1/4

Tags

CCSS.7.NS.A.1C

3/8 - (-1/4)

• 5/8

• 3/4

• 4/8

• -5/8

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.5.NF.A.1

CCSS.5.NF.A.2

Tags

CCSS.7.NS.A.1C

What do you need to have when adding unlike fractions?

• common denominator

• common numerator

• common numerator and denominator

Tags

CCSS.7.NS.A.1C