# Find the LCM of 2 Numbers: Worksheets, Online Test and Calculators

Find the lcm of 2 numbers worksheets, solved worksheet problems or exercises with step-by-step work, formative assessment as online test, calculator and more learning resources to learn, practice, assess and master the basic math skills of divisors and factors.

## Find the LCM of 2 Numbers

Name
Date

1
Find the LCM of 8 and 12
2
Find the LCM of 9 and 12
3
Find the LCM of 6 and 8
4
Find the LCM of 8 and 10
5
Find the LCM of 12 and 15
6
Find the LCM of 12 and 18
7
Find the LCM of 12 and 16
8
Find the LCM of 6 and 9
9
Find the LCM of 24 and 36
10
Find the LCM of 9 and 15
11
Find the LCM of 8 and 9
12
Find the LCM of 4 and 5
13
Find the LCM of 18 and 24
14
Find the LCM of 10 and 15
15
Find the LCM of 16 and 24
16
Find the LCM of 4 and 10
17
Find the LCM of 10 and 12
18
Find the LCM of 4 and 6
19
Find the LCM of 15 and 25
20
Find the LCM of 5 and 6

Solved Worksheet Problems
1
Find the LCM of 8 and 12
24 is the LCM of 8 and 12
Factors of 8
 2 8 2 4 2 2 1
Factors of 12
 2 12 2 6 3 3 1

Factors of 8 = 2 x 2 x 2
Factors of 12 = 2 x 2 x 3
Multiply all the common and uncommon factors of 8 and 12.
2 x 2 x 2 x 3 = 24
LCM(8, 12) = 24
2
Find the LCM of 9 and 12
36 is the LCM of 9 and 12
Factors of 9
 3 9 3 3 1
Factors of 12
 2 12 2 6 3 3 1

Factors of 9 = 3 x 3
Factors of 12 = 2 x 2 x 3
Multiply all the common and uncommon factors of 9 and 12.
2 x 2 x 3 x 3 = 36
LCM(9, 12) = 36
3
Find the LCM of 6 and 8
24 is the LCM of 6 and 8
Factors of 6
 2 6 3 3 1
Factors of 8
 2 8 2 4 2 2 1

Factors of 6 = 2 x 3
Factors of 8 = 2 x 2 x 2
Multiply all the common and uncommon factors of 6 and 8.
2 x 2 x 2 x 3 = 24
LCM(6, 8) = 24
4
Find the LCM of 8 and 10
40 is the LCM of 8 and 10
Factors of 8
 2 8 2 4 2 2 1
Factors of 10
 2 10 5 5 1

Factors of 8 = 2 x 2 x 2
Factors of 10 = 2 x 5
Multiply all the common and uncommon factors of 8 and 10.
2 x 2 x 2 x 5 = 40
LCM(8, 10) = 40
5
Find the LCM of 12 and 15
60 is the LCM of 12 and 15
Factors of 12
 2 12 2 6 3 3 1
Factors of 15
 3 15 5 5 1

Factors of 12 = 2 x 2 x 3
Factors of 15 = 3 x 5
Multiply all the common and uncommon factors of 12 and 15.
2 x 2 x 3 x 5 = 60
LCM(12, 15) = 60
6
Find the LCM of 12 and 18
36 is the LCM of 12 and 18
Factors of 12
 2 12 2 6 3 3 1
Factors of 18
 2 18 3 9 3 3 1

Factors of 12 = 2 x 2 x 3
Factors of 18 = 2 x 3 x 3
Multiply all the common and uncommon factors of 12 and 18.
2 x 2 x 3 x 3 = 36
LCM(12, 18) = 36
7
Find the LCM of 12 and 16
48 is the LCM of 12 and 16
Factors of 12
 2 12 2 6 3 3 1
Factors of 16
 2 16 2 8 2 4 2 2 1

Factors of 12 = 2 x 2 x 3
Factors of 16 = 2 x 2 x 2 x 2
Multiply all the common and uncommon factors of 12 and 16.
2 x 2 x 2 x 2 x 3 = 48
LCM(12, 16) = 48
8
Find the LCM of 6 and 9
18 is the LCM of 6 and 9
Factors of 6
 2 6 3 3 1
Factors of 9
 3 9 3 3 1

Factors of 6 = 2 x 3
Factors of 9 = 3 x 3
Multiply all the common and uncommon factors of 6 and 9.
2 x 3 x 3 = 18
LCM(6, 9) = 18
9
Find the LCM of 24 and 36
72 is the LCM of 24 and 36
Factors of 24
 2 24 2 12 2 6 3 3 1
Factors of 36
 2 36 2 18 3 9 3 3 1

Factors of 24 = 2 x 2 x 2 x 3
Factors of 36 = 2 x 2 x 3 x 3
Multiply all the common and uncommon factors of 24 and 36.
2 x 2 x 2 x 3 x 3 = 72
LCM(24, 36) = 72
10
Find the LCM of 9 and 15
45 is the LCM of 9 and 15
Factors of 9
 3 9 3 3 1
Factors of 15
 3 15 5 5 1

Factors of 9 = 3 x 3
Factors of 15 = 3 x 5
Multiply all the common and uncommon factors of 9 and 15.
3 x 3 x 5 = 45
LCM(9, 15) = 45
11
Find the LCM of 8 and 9
72 is the LCM of 8 and 9
Factors of 8
 2 8 2 4 2 2 1
Factors of 9
 3 9 3 3 1

Factors of 8 = 2 x 2 x 2
Factors of 9 = 3 x 3
Multiply all the common and uncommon factors of 8 and 9.
2 x 2 x 2 x 3 x 3 = 72
LCM(8, 9) = 72
12
Find the LCM of 4 and 5
20 is the LCM of 4 and 5
Factors of 4
 2 4 2 2 1
Factors of 5
 5 5 1

Factors of 4 = 2 x 2
Factors of 5 = 5
Multiply all the common and uncommon factors of 4 and 5.
2 x 2 x 5 = 20
LCM(4, 5) = 20
13
Find the LCM of 18 and 24
72 is the LCM of 18 and 24
Factors of 18
 2 18 3 9 3 3 1
Factors of 24
 2 24 2 12 2 6 3 3 1

Factors of 18 = 2 x 3 x 3
Factors of 24 = 2 x 2 x 2 x 3
Multiply all the common and uncommon factors of 18 and 24.
2 x 2 x 2 x 3 x 3 = 72
LCM(18, 24) = 72
14
Find the LCM of 10 and 15
30 is the LCM of 10 and 15
Factors of 10
 2 10 5 5 1
Factors of 15
 3 15 5 5 1

Factors of 10 = 2 x 5
Factors of 15 = 3 x 5
Multiply all the common and uncommon factors of 10 and 15.
2 x 3 x 5 = 30
LCM(10, 15) = 30
15
Find the LCM of 16 and 24
48 is the LCM of 16 and 24
Factors of 16
 2 16 2 8 2 4 2 2 1
Factors of 24
 2 24 2 12 2 6 3 3 1

Factors of 16 = 2 x 2 x 2 x 2
Factors of 24 = 2 x 2 x 2 x 3
Multiply all the common and uncommon factors of 16 and 24.
2 x 2 x 2 x 2 x 3 = 48
LCM(16, 24) = 48
16
Find the LCM of 4 and 10
20 is the LCM of 4 and 10
Factors of 4
 2 4 2 2 1
Factors of 10
 2 10 5 5 1

Factors of 4 = 2 x 2
Factors of 10 = 2 x 5
Multiply all the common and uncommon factors of 4 and 10.
2 x 2 x 5 = 20
LCM(4, 10) = 20
17
Find the LCM of 10 and 12
60 is the LCM of 10 and 12
Factors of 10
 2 10 5 5 1
Factors of 12
 2 12 2 6 3 3 1

Factors of 10 = 2 x 5
Factors of 12 = 2 x 2 x 3
Multiply all the common and uncommon factors of 10 and 12.
2 x 2 x 3 x 5 = 60
LCM(10, 12) = 60
18
Find the LCM of 4 and 6
12 is the LCM of 4 and 6
Factors of 4
 2 4 2 2 1
Factors of 6
 2 6 3 3 1

Factors of 4 = 2 x 2
Factors of 6 = 2 x 3
Multiply all the common and uncommon factors of 4 and 6.
2 x 2 x 3 = 12
LCM(4, 6) = 12
19
Find the LCM of 15 and 25
75 is the LCM of 15 and 25
Factors of 15
 3 15 5 5 1
Factors of 25
 5 25 5 5 1

Factors of 15 = 3 x 5
Factors of 25 = 5 x 5
Multiply all the common and uncommon factors of 15 and 25.
3 x 5 x 5 = 75
LCM(15, 25) = 75
20
Find the LCM of 5 and 6
30 is the LCM of 5 and 6
Factors of 5
 5 5 1
Factors of 6
 2 6 3 3 1

Factors of 5 = 5
Factors of 6 = 2 x 3
Multiply all the common and uncommon factors of 5 and 6.
2 x 3 x 5 = 30
LCM(5, 6) = 30

## Worksheet: Find the LCM of 2 Numbers

Find the lcm of 2 numbers worksheet is the largest collection of practice problems and solved exercises which can be served as homework, classwork or assignment problems for the students to learn, practice, assess, iterate and master the skills of how to solve such divisors and factors problems in basic mathematics.

### LCM Calculator

Input
comma saparated input values
LCM (10,20,40) = 40
show workout

## Work with steps - Least Common Multiple

Question:
Find LCM of given integers 10,20,40.
Factors of 10
 2 10 5 5 1
Factors of 20
 2 20 2 10 5 5 1
Factors of 40
 2 40 2 20 2 10 5 5 1
Factors of 10 = 2 x 5
Factors of 20 = 2 x 2 x 5
Factors of 40 = 2 x 2 x 2 x 5
Multiply all the common and uncommon factors of 10, 20 & 40
2 x 2 x 2 x 5 = 40
LCM(10, 20, 40) = 40

Lcm calculator is a key tool for users to generate step-by-step work to quickly understand the calculation, solve the homework problems, solve the classwork problems, prepare the answer key document for summative and formative assessments or immediately verify the entire calculation for the user supplied input values.