Practice Least Common Multiple in Math
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
The smallest positive integer that is divisible by each of two or more given numbers—where their multiples first coincide.
The first number that appears in both times tables—where two counting sequences land on the same value.
Example 1
easyFind the LCM of 12 and 18.
Example 2
mediumFind the LCM of 8, 12, and 15.
Example 3
easyFind the LCM of 9 and 15.
Example 4
easyTwo lights flash every 6 seconds and every 8 seconds. If they flash together now, after how many seconds will they flash together again?