Least Common Multiples

These are all multiples of 2 and 6 but which is the LEAST COMMON MULTIPLE?

• 6

• 12

• 18

• 24

If Juanita runs every third day and swims every fifth day, what is the first day that she will both run and swim again? 

• 5

• 15

• 45

• 30

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

• 4

• 40

• 15

• 20

Find the Least Common Multiple of 3 and 12

Find the Least Common Multiple (LCM) of 4 & 14.

• 14

• 20

• 28

• 42

Find the Least Common Multiple (LCM) of 12 & 30

• 30

• 36

• 60

• 90

What is the LCM of 2, 4, 6?

• 6

• 12

• 4

• 2

Is this question asking to find GCF or LCM?

• GCF

• LCM

Is this question asking to find GCF or LCM?

• GCF

• LCM

Two neon signs are turned on at the same time. Both signs blink as they are turned on. One sign blinks every 9 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again?

• 48 seconds

• 45 seconds

• 16 seconds

• 8 seconds