Exponents Followup Week 2 Term 3

WALT: Use more than one strategy to solve number problems.

problem 1

82 - 54 = 28                  8 x 9 = 72 

28 + 54 = 82                 72 + 3 = 75

9 x 9 = 81 + 1 = 82       75 + 7 = 82

problem 2 

84 - 19 = 65         11 x 7 = 77 
65 + 19 = 84        77 + 3 = 80
12 x 7 = 84           80 + 4 = 84

Today the exponents are learning  Use more than one strategy to solve number problems.