Multiples are a little trickier to explain to third graders. We understand it as an answer to a multiplication sentence (also known as the product). For example, in the number sentence 2 x 4 = 8, 8is a multiple.
We also learn that multiples are the numbers we count when we skip count by a certain number. For example, 2,4,6,8,10,12,14, etc... are all multiples of 2.
Happy multiplying! :o)