9/25 Vocabulary words.

1. Common Denomiator- A multiple of all the denominator in the problem. The Lcm is the best common denomiator yo use.

2. Communicative Law- The math ruke that says that the order if the numbers in addition and multiplication probelms doesn't matter. Example: 1+3=3+1 ( a+b-b+a) 5*9=9*5 ( ab=ba)

3. Natural Numbers- The number you count with. (1,2,3,4)

4. Ebullient- (adective) intensely enthusiastis; very excited.