What is LCM of Two given Numbers

Name Grade School
Date Questions20 Score

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

Answers Key
1
Find the LCM of 8 and 12
24 is the LCM of 8 and 12
Factors of 8
28
24
22
1
Factors of 12
212
26
33
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
39
33
1
Factors of 12
212
26
33
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
26
33
1
Factors of 8
28
24
22
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
28
24
22
1
Factors of 10
210
55
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
212
26
33
1
Factors of 15
315
55
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
212
26
33
1
Factors of 18
218
39
33
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
212
26
33
1
Factors of 16
216
28
24
22
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
26
33
1
Factors of 9
39
33
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
224
212
26
33
1
Factors of 36
236
218
39
33
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
39
33
1
Factors of 15
315
55
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
28
24
22
1
Factors of 9
39
33
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
24
22
1
Factors of 5
55
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
218
39
33
1
Factors of 24
224
212
26
33
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
210
55
1
Factors of 15
315
55
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
216
28
24
22
1
Factors of 24
224
212
26
33
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
24
22
1
Factors of 10
210
55
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
210
55
1
Factors of 12
212
26
33
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
24
22
1
Factors of 6
26
33
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
315
55
1
Factors of 25
525
55
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
55
1
Factors of 6
26
33
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

Finding Least Common Multiple (LCM) Worksheet

LCM of 2 numbers worksheet with answers to practice & learn 6th grade math problems on least common multiple is available online for free in printable & downloadable (pdf & image) format. Tap on PRINT, PDF or IMAGE button to print or download this grade-6 worksheet for how to find LCM of given two numbers.

How to Use this Worksheet

In this sixth grade math worksheet, students are required to find what is the least common multiple of given two numbers. To find the LCM of numbers, find the factors of both numbers. The product of common & independent factors of both numbers form LCM of given 2 numbers.

Answers Key

Teachers, tutors, parents or students can check or validate the solved math workbook of 6th grade math questions on finding the LCM of given two numbers by using the corresponding answers key which has step by step work for each exercise.

Generate More Worksheets

Students, teachers, tutors or parents can generate unlimited set of grade-6 math questions & answers by using this "NEW WORKSHEET" button to prepare exam, assignments, classwork or homework problems & step by step work on finding the LCM of given two numbers.