Let's start! Take a look at all of these blocks. You can reach the number 10 by adding the blocks in many different ways. BUT, what is the LEAST number of blocks you need to add together in order to reach the number 10?
The number 6 is the smallest perfect number. What, exactly, is a perfect number? It's a positive integer that is equal to the sum of its positive divisors. So in the case of 6, the divisors are 1, 2, and 3. If you add these three numbers up, you'll wind up with 6!
