Finding Common Denominators

Finding Common Denominators

Using our method

Multiple Choice

1/4 + 5/8

• 2/8
• 6/12
• 3/4
• 7/8

Multiple Choice

50/100 + 25/100 =

• 100/75
• 100/100
• 75/100
• 52/100

Multiple Choice

Solve this equation using the least common denominator.
¼ + ½

• 3/4
• 2/8
• 6/4
• 6/8

Multiple Choice

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

Multiple Choice

Which number is a multiple of 5?

• 16
• 29
• 40
• 32

Multiple Choice

Fill in the missing multiple.
3:  3, 6, 9, ___, 15, 18, 21

• 10
• 11
• 12
• 13

Multiple Choice

What number could be a common denominator for these two fractions?
2/3   and   3/4

• 3
• 4
• 7
• 12

Multiple Choice

Which one is a multiple of 4?

• 33
• 22
• 18
• 24

Multiple Choice

The multiples of 7 are
1,6,7,9,3,6,4

• True
• False

Multiple Choice

What number could be a common denominator for these two fractions?
1/5   and   5/6?

• 30
• 11
• 6
• 5

Multiple Choice

What must you have to add and subtract fractions?

• Common numerators
• Different numerators
• Different denominators
• Common denominators

Multiple Choice

What is the least common denominator of 1/4 and 2/5?

• 5
• 25
• 10
• 20

Multiple Choice

What do you need to have when adding unlike fractions?

• common denominator
• common numerator
• common numerator and denominator

Multiple Choice

What is the least common denominator of 1/9 and 2/3?

• 6
• 3
• 9
• 21

Multiple Choice

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

Multiple Choice

Which fraction renames 3/4 with a denominator of 12?

• 3/12

• 4/12

• 12/12

• 9/12

Multiple Choice

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

• 9

• 12

• 18

• 27

Multiple Choice

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

• 6

• 4

• 9

• 2