Answer: 30
Step-by-step explanation: Start off by multiplying the two numbers.
3 x 10 = 30.
30 is a common multiple. Find any multiples below 30. Let’s start off using the biggest number of the two, which is 10, to see what other numbers can be multiples. 10, 20, and 30 can be. 3 can’t be divided into 10 or 20, so your least common multiple is 30.
