Adding and Subtracting Fractions with Unlike Denominators

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

• Find the greatest common factor to change your denominator

• Change the denominator by picking a random number then divide

• Find the least common multiple to change your denominator

• none of these are true

Tags

CCSS.7.NS.A.1C

3/4 - 2/10

• 11/20

• 9/10

• 11/24

• 9/4

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the first step to simplifying a fraction?

• List your multiples of each fractions

• List your factors of each fraction

• Pick a random number and divide the fraction twice

• None of these are true

Tags

CCSS.6.EE.A.3

CCSS.6.NS.B.4

4/5 + 3/8 (be sure to simplify)

• 32/40

• 1 7/40

• 2 5/7

• 1 1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

When you have an improper fraction what do you do to make it a mixed number?

• Divide

• Multiply

• Add

• Subtract

Tags

CCSS.5.NF.B.3

5/10 + 8/5

• 5/9

• 1/10

• 2 1/10

• 2 2/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

3/5 - 5/10

• 1/10

• 8/5

• 1/5

• 8/0

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Pick the steps that are true

• find the common denominators, add or subtract, change the numerators

• multiply the denominators, add or subtract the numerators, simplify, divide the fraction

• Find the least common denominators, what you do to the top do to the bottom, add or subtract, simplify

• add or subtract, simplify, multiply denominators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Which one is true

• You only simplify when you add fractions

• You simplify all the time unless the fraction is already simplified

• You only simplify when you subtract fractions

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

8/10 - 1/5

• 5/3

• 3/5

• 9/13

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2