Finding a Common Denominator

What would be the common denominator for adding 1/2 + 3/4?

• 6

• 4

• 9

• 2

Which of the following would be the new fractions for finding common denominators for 3/4 and 2/6?

• 9/12 and 4/12

• 6/8 and 4/12

• 9/12 and 6/18

• 2/12 and 6/12

What step should you do first when adding fractions with unlike denominators?

• Just add the denominators together

• Find a common denominator

• Add the numerators together first

• Chang each numerator to be the same

What would be the common denominator for adding 3/9 + 4/6?

• 9

• 12

• 18

• 27

• 6

• 12

• 8

• 7

You must find the ​ (a)   before you can add or subtract fractions with unlike denominators.

• common denominator

• common numerator

• multiple

• simplified fraction

You must find the (a)   before you can add or subtract fractions with unlike denominators.

• common denominator

• common numerator

• multiple

• simplified fraction

Which 2 expressions​ do you need to find Common Denominators for?​ (a)   ​ (b)  

Which can you use as a denominator to write equivalent fractions for 4/7 and 5/6?

• 24

• 30

• 35

• 42

Mathematical Equivalence

ON