Solving Equations Adding and Subtracting Mixed Review Common Denominators

When the denominators are not the same, I must find a...

• common numerator

• common denominator

• equivalent fraction

• mixed number

Tags

CCSS.7.NS.A.1C

What is the best common denominator for this problem?

• 5

• 2

• 20

• 10

What is the best common denominator for this problem?

• 6

• 8

• 24

• 48

Solve.

• 1 1/12

• 7/12

• 3/4

• 1 1/2

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• A
• B
• C
• D

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

What is the first step in solving this problem? 
⅘ + ½ =

• Add the top parts of the fraction

• Rewrite the fractions in the simplest form. 

• Find a common denominator. 

• Make each fraction into an improper faction. 

Tags

CCSS.7.NS.A.1C

When adding or subtracting fractions, I NEVER add or subtract the...

• numerators

• denominators

• mixed numbers

• equivalent fractions

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Find equivalent fractions and common denominators for the problem shown above.

• 1/10 and 4/10

• 5/10 and 4/10

• 1/20 and 2/20

• 5/10 and 2/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Solve.

• 5/9

• 1 4/9

• 1 1/6

• 7/9

Tags

CCSS.7.NS.A.1C