Because of the multiple attempts and instant feedback features of CAPA, some students fall into the sloppy habit of attempting to guess the answer or roughly sketch the answer without working the problem in detail. CAPA usually wants 3 or more sig.figs. To make CAPA understand, write it as 200.0 or 200. Enter numerical answers without commas. If CAPA thinks the units or the sig.figs. are wrong, it won't even look at your numerical answer.
Many answers require units.
Leave a space between the number and the units. Use these special symbols only when constructing units . Always enter numerical answers as pure numbers, not expressions. On some problems hints are given after incorrect attempts. The hint will always be given after an incorrect answer, but keep in mind that the hints are dumb, i.e. they are NOT related to YOUR specific answer.