Khan/khan-exercises — pull request #9270 by mwahl (2011-12-22 09:23:58+00:00)
Title: Decimals number line

Added decimals on the number line 1/2. Not crazy about the hints here (esp. logical leap in decimals 2 from x.y = x + 0.y --> we know x.y must be between x and x+1) - will noodle on it tomorrow.

@beneater @elizabethslavvit @marcia et. al., feedback welcome!