Martha estimated there were 96 marbles in a jar for a contest. the actual number of marbles in the jar was 118. what was the percent error of martha's estimation?

To find percent error, you subtract the actual number from your estimate, take the absolute value, and divide by the actual number.

l 96 - 118 l
l -22 l
l 22 l
l 22 l / 118
0.19%  (this was rounded)

Hope this helps!