Multiples of 5 and 10

We connected 5 cubes and we did 2 different colors and we connected sets of 5 cubes until we got to 50 cubes. Then we did the same for 10 cubes. When we were done we compared them. It took twice as many groups of 5 to make 50.  Then we took a strip of paper and we wrote 5 10 15 20 and so on. Also we measured them and they are both the same length it is a commutative property: 5x10=50 and 10x5 = 50. By Taylor