Sam measured the length of a pen to be 22cm. The actual length of the pen is 23 cm. Determine the percent error for this situation.

Jane moves from a house with 71 square feet of closet space to an apartment with 45.44 square feet of closet space. what is the percentage decrease of jane’s closet space?

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?

1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.