Least Common Multiple LCM

LCM(3, 8) =

• 16

• 24

• 32

• 48

Answer explanation

The least common multiple (LCM) of 3 and 8 is 24, as it is the smallest number that both 3 and 8 can divide without a remainder. Thus, the correct answer is 24.

LCM(5, 10) =

• 50

• 30

• 10

• 5

Answer explanation

The least common multiple (LCM) of 5 and 10 is 10, as it is the smallest number that both 5 and 10 can divide without a remainder. Thus, the correct answer is 10.

LCM(6, 7) =

• 84

• 21

• 13

• 42

Answer explanation

To find the LCM of 6 and 7, we multiply them since they are coprime: 6 x 7 = 42. Thus, LCM(6, 7) = 42.

LCM(2, 8) =

• 8

• 4

• 16

• 24

Answer explanation

The least common multiple (LCM) of 2 and 8 is the smallest number that both can divide without a remainder. Since 8 is a multiple of 2, LCM(2, 8) = 8, making it the correct answer.

LCM(12, 8)

• 96

• 24

• 36

• 72

Answer explanation

To find the LCM of 12 and 8, we can list the multiples of each. The multiples of 12 are 12, 24, 36, 48, ... and the multiples of 8 are 8, 16, 24, 32, ... The smallest common multiple is 24.

LMC(10, 6) =

• 30

• 60

• 50

• 40

Answer explanation

LMC(10, 6) refers to the least common multiple of 10 and 6. The multiples of 10 are 10, 20, 30, 40, ... and the multiples of 6 are 6, 12, 18, 24, 30, ... The smallest common multiple is 30.

LCM(12, 6) =

• 18

• 36

• 24

• 12

Answer explanation

The LCM (Least Common Multiple) of 12 and 6 is the smallest number that both can divide without a remainder. Since 12 is a multiple of 6, LCM(12, 6) = 12.

LCM(10, 4)

• 40

• 20

• 30

• 10

Answer explanation

The LCM of 10 and 4 is the smallest multiple that both numbers share. The multiples of 10 are 10, 20, 30, 40, and the multiples of 4 are 4, 8, 12, 16, 20, 24, 28, 32, 36, 40. The smallest common multiple is 20.

LCM(6, 8) =

• 24

• 12

• 48

• 14

Answer explanation

To find the LCM of 6 and 8, we can list the multiples: 6 (6, 12, 18, 24, ...) and 8 (8, 16, 24, ...). The smallest common multiple is 24, making the correct answer 24.

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

• 5

• 10

• 20

• 40

Answer explanation

The least common multiple (LCM) of 10 and 20 is the smallest number that both can divide without a remainder. Since 20 is a multiple of 10, the LCM is 20.