counting up.
Example 432-195.
take five to make 200, then 200 more (total 205) to make 400, then add 32, total 237.
Trade-first method.
http://ouronlineschools.org/Schools/NC/Demoschool/3rdGrade/Math/Reviews/TradeFirstSubtractionMethod.htm
In estimating- what is the counting-up method and the trade-first method?
3 answers
I don't get a synonym for cloudy,wait,annoying,help,circle,and splash
LOSER!