



 
Marcha, Talking about "rounding to the nearest ten" is misleading, because (say) 20 and 30 are exactly the same distance from 25; there isn't a "nearest" ten. There are various conventions on how to "round fives". Schools usually teach that numbers ending in 5 should be rounded upward. (*) Whatever: this won't change the hundreds digit. So the number is where there is a missing digit in the red box Now what do you get after rounding? So what's in the red box? Good Hunting! * There is another convention called "roundtoeven" or "banker's rounding"; you can look it up if you're curious.
 


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 