Free Printable LEAST COMMON MULTIPLE

1.

What is the LCM of 3 and 4?

a)

4

b)

16

c)

12

d)

24

2.

Which of these numbers is a multiple of 18?

a)

2

b)

6

c)

35

d)

54

3.

What is the LCM of 2, 4, and 9?

a)

18

b)

36

c)

27

d)

40

4.

What is the LCM of 7 and 8?

a)

7

b)

8

c)

42

d)

56

5.

What is the least common multiple (LCM) of 4 and 10?

a)

4

b)

40

c)

15

d)

20

6.

What is the LCM of 2, 4, 6?

a)

6

b)

12

c)

4

d)

2

7.

Fill in the Blank: Least _______ ________

a)

Common Multilpier

b)

Common Multiple

c)

Common Factor

8.

Joe has listed the first 4 multiples of 7 as:

7, 14 , 22, 28

Which one is incorrect?

a)

7

b)

14

c)

22

d)

28

9.

Which choice lists all the factors for the number 24?

a)

2, 3, 4, 6, 8, 12, 24

b)

2, 3, 4, 6, 8, 12, 24, 36

c)

1, 2, 3, 4, 6, 8, 12, 24

d)

1, 2, 4, 5, 6, 8, 12 ,24

10.

Which number is NOT prime?

a)

3

b)

7

c)

17

d)

21

11.

Composite numbers:

a)

Are always bigger than prime numbers

b)

Have more than 2 factors

c)

Have 2 pairs of factors

d)

Don't have factors

12.

Identify the number that is a multiple of 9...

a)

78

b)

79

c)

80

d)

81

13.

What is the least common multiple (LCM) of 5 and 11?

a)

25

b)

55

c)

11

14.

Choose the correct list of the first five multiples of 6.

a)

6, 12, 18, 32, 36

b)

6, 14, 22, 28, 34

c)

6, 12, 18, 24, 32

d)

1, 6, 12, 18, 24

15.

What is the least common multiple of 5, 4, and 10?

a)

20

b)

40

c)

10

d)

30

16.

Find the least common multiple (LCM) of 2 and 3.

a)

2

b)

3

c)

6

d)

12

17.

Find the least common multiple (LCM) of 3 and 15.

a)

3

b)

15

c)

45

18.

Find the least common multiple (LCM) of 10 and 20.

a)

5

b)

10

c)

20

d)

40

19.

Find the least common multiple (LCM) of 6 and 12.

a)

3

b)

4

c)

6

d)

12

20.

Find the least common multiple (LCM) of 5 and 25.

a)

5

b)

10

c)

25

d)

125

21.

Find the least common multiple (LCM) of 4 and 6.

a)

4

b)

6

c)

12

d)

24

22.

Find the least common multiple (LCM) of 3 and 7.

a)

7

b)

3

c)

21

d)

14

23.

Find the least common multiple (LCM) of 4 and 8.

a)

8

b)

4

c)

16

d)

32

24.

Find the least common multiple (LCM) of 9 and 5.

a)

5

b)

9

c)

45

d)

36

25.

Find the least common multiple (LCM) of 2 and 12.

a)

2

b)

4

c)

6

d)

12

26.

What is the least common multiple (LCM) of 3 and 20?

a)

60

b)

40

c)

20

d)

3

27.

What is the least common multiple (LCM) of 8 and 5?

a)

50

b)

40

c)

5

d)

8

28.

What is the least common multiple (LCM) of 15 and 2?

a)

30

b)

2

c)

45

d)

152

29.

What is the least common multiple (LCM) of 6 and 8?

a)

6

b)

8

c)

48

d)

24

30.

Choose the correct list of the first five multiples of 10.

a)

1, 10, 20, 30, 40

b)

10, 20, 30, 40, 50

c)

5, 10, 15, 20, 25

d)

10, 30, 40, 50, 60

31.

Use a number tree to find the prime factorization of 34

a)

2x2x2x4

b)

2x2x2x2x2

c)

4x4x2

d)

2x2x2x2x1

32.

All of these are prime except

a)

3

b)

9

c)

2

d)

13

33.

Which of these is NOT a factor of 36?

a)

2

b)

8

c)

12

d)

6

34.

What is the least common denominator of 1/7 and 3/6?

a)

14

b)

21

c)

7

d)

42

35.

What is the LCM of 2, 4, 6?

a)

6

b)

12

c)

4

d)

2

36.

LCM(3, 8) =

a)

16

b)

24

c)

32

d)

48

37.

LCM(7, 4) =

a)

32

b)

21

c)

56

d)

28

38.

LCM(5, 10) =

a)

50

b)

30

c)

10

d)

5

39.

LCM(6, 7) =

a)

84

b)

21

c)

13

d)

42

40.

LCM(2, 8) =

a)

8

b)

4

c)

16

d)

24

41.

LCM(12, 8)

a)

96

b)

24

c)

36

d)

72

42.

LMC(10, 6) =

a)

30

b)

60

c)

50

d)

40

43.

LCM(5, 8) =

a)

20

b)

40

c)

45

d)

35

44.

LCM(12, 6) =

a)

18

b)

36

c)

24

d)

12

45.

LCM(10, 4)

a)

40

b)

20

c)

30

d)

10

46.

LCM(3, 5) =

a)

15

b)

30

c)

5

d)

20

47.

LCM(2, 9) =

a)

36

b)

18

c)

29

d)

42

48.

LCM(4, 3) =

a)

7

b)

43

c)

12

d)

24

49.

LCM(10, 5) =

a)

5

b)

15

c)

60

d)

30

50.

LCM(6, 8) =

a)

24

b)

12

c)

48

d)

14

51.

LCM(3, 11) =

a)

25

b)

66

c)

14

d)

33

52.

What is the Greatest Common Factor of 10 and 21?

a)

2

b)

12

c)

1

d)

5

53.

What is the Least Common Multiple of 4 and 14

a)

28

b)

42

c)

56

d)

24

54.

What is the Greatest Common Factor of 35 and 49

a)

5

b)

7

c)

1

d)

17

55.

What is the Least Common Multiple of 5 and 11?

a)

45

b)

66

c)

25

d)

55

56.

What is the Greatest Common Factor of 12 and 48?

a)

6

b)

12

c)

4

d)

16

57.

What is the Greatest Common Factor of 35 and 42?

a)

5

b)

14

c)

7

d)

3

58.

What is the Least Common Multiple of 10 and 48?

a)

240

b)

260

c)

480

d)

140

59.

What is the Greatest Common Factor of 23 and 78?

a)

2

b)

23

c)

1

d)

14

60.

What is the Least Common Multiple of 15 and 90?

a)

90

b)

45

c)

180

d)

120

LEAST COMMON MULTIPLE

Total questions: 60

Worksheet time: 30mins

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