Lesson Worksheet: Common Denominators Mathematics • 4th Grade
In this worksheet, we will practice finding a common denominator of two proper fractions using models or listing multiples and using this to write both fractions over the same denominator.
Q1:
Find the LCD of the following pair of fractions: and .
Q2:
Write the common denominator of the fractions and .
Q3:
Given the following fractions, which of the following models represents the common denominator?
- A
- B
- C
- D
- E
Q4:
Nader says a common denominator of the fractions and is 2.
Is this correct?
- AYes
- BNo
Which of these is a common denominator of the fractions?
- A2
- B6
- C4
- D3
- E1
Q5:
Anthony divides a tart into 4 slices and Michael divides another tart of the same size into 5 slices. In how many slices can they now cut their tarts to get same-sized slices?
Q6:
Jacob has drawn the model area of both and as shown.
Which of the following models expresses the common denominator of the two fractions?
- A
- B
- C
- D
- E
Q7:
Consider the two fractions and .
What is the denominator of ?
What is the denominator of ?
Which of the following is a common denominator for the two fractions?
- A1
- B2
- C3
- D6
- E11
Q8:
Select a common denominator of the fractions , , and .
- A30
- B2
- C10
- D5
- E6
Q9:
Which of the following pairs of fractions are equivalent to and ?
- A and
- B and
- C and
- D and
- E and
Q10:
Rewrite the fractions and as two fractions with a common denominator.
- A and
- B and
- C and
- D and
- E and
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