  MathScore EduFighter is one of the best math games on the Internet today. You can start playing for free!

Least Common Multiple - Sample Math Practice Problems

The math problems below can be generated by MathScore.com, a math practice program for schools and individual families. References to complexity and mode refer to the overall difficulty of the problems as they appear in the main program. In the main program, all problems are automatically graded and the difficulty adapts dynamically based on performance. Answers to these sample questions appear at the bottom of the page. This page does not grade your responses.

See some of our other supported math practice problems.

Complexity=4

Find the least common multiple of each pair of numbers.

 1.   2, 3 2.   4, 2

Complexity=7

Find the least common multiple of each pair of numbers.

 1.   6, 2 2.   7, 4

Complexity=10

Find the least common multiple of each pair of numbers.

 1.   6, 10 2.   10, 5

Complexity=14

Find the least common multiple of each pair of numbers.

 1.   3, 12 2.   3, 6

Complexity=16

Find the least common multiple of each pair of numbers.

 1.   12, 15 2.   8, 16

Complexity=20

Find the least common multiple of each pair of numbers.

 1.   16, 8 2.   12, 20

Complexity=40

Find the least common multiple of each pair of numbers.

 1.   24, 36 2.   36, 18

Complexity=50

Find the least common multiple of each pair of numbers.

 1.   40, 30 2.   50, 35

Complexity=4

Find the least common multiple of each pair of numbers.

12, 3
Solution
Multiples of 2: 2, 4, 6
Multiples of 3: 3, 6
24, 2
Solution
2 divides evenly into 4. Therefore 4 is the LCM.

Complexity=7

Find the least common multiple of each pair of numbers.

16, 2
Solution
2 divides evenly into 6. Therefore 6 is the LCM.
27, 4
Solution
Multiples of 7: 7, 14, 21, 28
Multiples of 4: 4, 8, 12, 16, 20, 24, 28

Complexity=10

Find the least common multiple of each pair of numbers.

16, 10
Solution
The GCF is 2.
LCM(6,10) = product / gcf = (6 * 10) / 2.
= (6/2) * 10
= 3 * 10.
= 30.
210, 5
Solution
5 divides evenly into 10. Therefore 10 is the LCM.

Complexity=14

Find the least common multiple of each pair of numbers.

13, 12
Solution
3 divides evenly into 12. Therefore 12 is the LCM.
23, 6
Solution
3 divides evenly into 6. Therefore 6 is the LCM.

Complexity=16

Find the least common multiple of each pair of numbers.

112, 15
Solution
The GCF is 3.
LCM(12,15) = product / gcf = (12 * 15) / 3.
= (12/3) * 15
= 4 * 15.
= 60.
28, 16
Solution
8 divides evenly into 16. Therefore 16 is the LCM.

Complexity=20

Find the least common multiple of each pair of numbers.

116, 8
Solution
8 divides evenly into 16. Therefore 16 is the LCM.
212, 20
Solution
The GCF is 4.
LCM(12,20) = product / gcf = (12 * 20) / 4.
= (12/4) * 20
= 3 * 20.
= 60.

Complexity=40

Find the least common multiple of each pair of numbers.

124, 36
Solution
The GCF is 12.
LCM(24,36) = product / gcf = (24 * 36) / 12.
= (24/12) * 36
= 2 * 36.
= 72.
236, 18
Solution
18 divides evenly into 36. Therefore 36 is the LCM.

Complexity=50

Find the least common multiple of each pair of numbers.

140, 30
Solution
The GCF is 10.
LCM(40,30) = product / gcf = (40 * 30) / 10.
= (40/10) * 30
= 4 * 30.
= 120.   