Math Software Online: MathScore.com
  

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.

Learn more about our online math practice software.
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, 3

Complexity=7

Find the least common multiple of each pair of numbers.
1.   2, 6 2.   4, 2

Complexity=10

Find the least common multiple of each pair of numbers.
1.   3, 9 2.   3, 10

Complexity=14

Find the least common multiple of each pair of numbers.
1.   12, 3 2.   2, 8

Complexity=16

Find the least common multiple of each pair of numbers.
1.   6, 15 2.   9, 12

Complexity=20

Find the least common multiple of each pair of numbers.
1.   12, 9 2.   8, 12

Complexity=40

Find the least common multiple of each pair of numbers.
1.   36, 32 2.   36, 18

Complexity=50

Find the least common multiple of each pair of numbers.
1.   35, 30 2.   35, 25

Answers

Complexity=4

Find the least common multiple of each pair of numbers.
#ProblemCorrect AnswerYour Answer
12, 3
Solution
Multiples of 2: 2, 4, 6
Multiples of 3: 3, 6
#ProblemCorrect AnswerYour Answer
24, 3
Solution
Multiples of 4: 4, 8, 12
Multiples of 3: 3, 6, 9, 12

Complexity=7

Find the least common multiple of each pair of numbers.
#ProblemCorrect AnswerYour Answer
12, 6
Solution
2 divides evenly into 6. Therefore 6 is the LCM.
#ProblemCorrect AnswerYour Answer
24, 2
Solution
2 divides evenly into 4. Therefore 4 is the LCM.

Complexity=10

Find the least common multiple of each pair of numbers.
#ProblemCorrect AnswerYour Answer
13, 9
Solution
3 divides evenly into 9. Therefore 9 is the LCM.
#ProblemCorrect AnswerYour Answer
23, 10
Solution
The GCF is 1.
LCM(3,10) = product / gcf = (3 * 10) / 1 = 30

Complexity=14

Find the least common multiple of each pair of numbers.
#ProblemCorrect AnswerYour Answer
112, 3
Solution
3 divides evenly into 12. Therefore 12 is the LCM.
#ProblemCorrect AnswerYour Answer
22, 8
Solution
2 divides evenly into 8. Therefore 8 is the LCM.

Complexity=16

Find the least common multiple of each pair of numbers.
#ProblemCorrect AnswerYour Answer
16, 15
Solution
The GCF is 3.
LCM(6,15) = product / gcf = (6 * 15) / 3.
= (6/3) * 15
= 2 * 15.
= 30.
#ProblemCorrect AnswerYour Answer
29, 12
Solution
The GCF is 3.
LCM(9,12) = product / gcf = (9 * 12) / 3.
= (9/3) * 12
= 3 * 12.
= 36.

Complexity=20

Find the least common multiple of each pair of numbers.
#ProblemCorrect AnswerYour Answer
112, 9
Solution
The GCF is 3.
LCM(12,9) = product / gcf = (12 * 9) / 3.
= (12/3) * 9
= 4 * 9.
= 36.
#ProblemCorrect AnswerYour Answer
28, 12
Solution
Multiples of 8: 8, 16, 24
Multiples of 12: 12, 24

Complexity=40

Find the least common multiple of each pair of numbers.
#ProblemCorrect AnswerYour Answer
136, 32
Solution
The GCF is 4.
LCM(36,32) = product / gcf = (36 * 32) / 4.
= (36/4) * 32
= 9 * 32.
= 288.
#ProblemCorrect AnswerYour Answer
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.
#ProblemCorrect AnswerYour Answer
135, 30
Solution
The GCF is 5.
LCM(35,30) = product / gcf = (35 * 30) / 5.
= (35/5) * 30
= 7 * 30.
= 210.
#ProblemCorrect AnswerYour Answer
235, 25
Solution
The GCF is 5.
LCM(35,25) = product / gcf = (35 * 25) / 5.
= (35/5) * 25
= 7 * 25.
= 175.
Learn more about our online math practice software.

"MathScore works."
- John Cradler, Educational Technology Expert
© Copyright 2010 Accurate Learning Systems Corp. All rights reserved.