Posted by **Barbara** on Thursday, March 12, 2009 at 4:35pm.

In estimating- what is the counting-up method and the trade-first method?

- 3rd grade math -
**bobpursley**, Thursday, March 12, 2009 at 5:48pm
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

- 3rd grade math -
**Andrea**, Thursday, March 12, 2009 at 10:57pm
I don't get a synonym for cloudy,wait,annoying,help,circle,and splash

- 5th Grade Math -
**Grace**, Monday, March 23, 2009 at 7:30pm
LOSER!

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