Team Problem Solving.

My team and I solved a problem. We solved the problem in three stratgies. The stratagies were place value, written algoritim, and rounding and compensating.

The problem was, A farm received a total of 119 millimetres of rain over a 2 month period. If 48 millimetres of rain fell on the farm in June, how many millimetres of rain fell on the farm in month 2?

The first stratagy we used was place value.

119 - 48 = ??

 9 - 8 = 1

 10 - 40 is not possible so we have to add the hundred to the ten.

110 - 40 = 70.
The last step is to combine the answers. 70 + 1 = 71, 71 millimetres fell on the farm on the second month.

I found this hard but enjoyed it because it can help me with solving equations.