Friday, September 9, 2011

Grant Fox Quiz

Friday, September 2, 2011

Subtracting with tidy number

This week we were learning to solve problems by equal additions that turn one of the numbers into a tidy number.

E.g 183-68=68+2=70-100=30+80+5=115 if you want to know if your answer is right you add 115 to the
68=60+8 +100+10+5=100+60+160+10=170+5=175+8=183