Monday, October 20, 2014
Round your answer to nearest cent: 1ドル.29 or 1ドル.30?
Tweeted (@dmarain) the above a couple of days ago. Moderate reaction so far which I find fascinating since I've done my own "random" survey...
SCENARIO
6th gr student calculates an *exact* answer of 1ドル.29. Directions read "round ans to nearest cent." Student writes 1ドル.30 in the answer box on the test. Teacher notes 1ドル.29 was correct but the answer in box was wrong. No credit for problem...
COREFLECTIONS
Making too big a deal of this? After all "rounded to nearest cent" means "round to nearest hundredth". So 1ドル.29 is already rounded to the nearest cent whereas 1ドル.30 is rounded to the nearest tenths or dime, right? Adults know that, right? Students should know, right? Certainly higher-achieving HS students know that, right? Hmm...
Maybe you should try your own informal survey. Let me know...
Posted by Dave Marain at 1:27 PM
No comments:
Post a Comment