Fractions Add Unlike Denominators

When Adding UNLIKE denominators fractions:

To find the denominator, you need to

• Multiply numerators

• Cross multiply the denominators

• Multiply denominators

• Add denominators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

When Adding UNLIKE denominators fractions:

To find the numerator, you need to

• The denominator remain the same

• Cross multiply the denominators and add the results

• Multiply denominator

• Add numerators

Tags

CCSS.7.NS.A.1C

The image represent an addition of:

• Like denominators fractions

• Unlike denominators Fraction

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Add

Tags

CCSS.4.NF.B.3A

These Fractions are

• Like denominators

• Unlike denominators

Tags

CCSS.4.NF.A.1

CCSS.5.NF.B.5B

What is the sum of 1/2 + 1/3 + 1/6?  
Simplify your answer.

• 1

• 3/24

• 5/6

• 3/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

2/6 + 2/8 =

• 4/14

• 4/8

• 7/12

• 8/16

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

(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

What is the the next step to finding this answer?

• Add the numerators (1+1=2)

• Multiply 12 X 1 for both fractions to find a new numerator
  

• Multiply to find each new numerator by the multiple used to get 12. (3 X1) (4 X 1)

• This is a mistake, you don't need to convert to twelfths

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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