Exponents follow up 2

Walt: Use two strategies to solve number problems

Today the exponents are learning to use To strategies to solve problems.

584 + 845 = 1429                   584 + 845= 1429
5 + 8 = 13                             1429 - 845 = 584
84 + 45 = 129

27 + 47 = 74                          27 + 47 = 74
20 + 40 = 60                         74 - 47 = 27
7 + 7 = 14
60 + 14 = 74