Math worksheet for finding common denominators and least common multiples.

$A math worksheet titled "Find Common Denominator" with exercises on finding least common multiples and common denominators for fractions, featuring a cartoon character in the top right corner.$

A math worksheet titled "Find Common Denominator" with exercises on finding least common multiples and common denominators for fractions, featuring a cartoon character in the top right corner.

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1. a. Multiples of 5: 5, 10, 15, 20, 25, 30
Multiples of 6: 6, 12, 18, 24, 30, 36
Least common multiples of 5 and 6: 30
b. Multiples of 2: 2, 4, 6, 8, 10, 12
Multiples of 4: 4, 8, 12, 16, 20, 24
Multiples of 8: 8, 16, 24, 32, 40, 48
Least common multiples of 2, 4 and 8: 8

2. Common denominators for 1/3 and 5/4: 12, 24, 36
Least common denominator: 12

3. a. Least common denominator: 40
2/5 = 16/40 (x8); 3/8 = 15/40 (x5)
b. Least common denominator: 9
1/3 = 3/9 (x3); 4/9 = 4/9 (x1)
c. Least common denominator: 56
5/8 = 35/56 (x7); 1/7 = 8/56 (x8)
d. Least common denominator: 12
4/6 = 8/12 (x2); 3/4 = 9/12 (x3)

Parent Tip: Review the logic above to help your child master the concept of common denominator worksheet.

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