A student estimated the mass of a wood block to be 200 g. When he placed the block on a balance, he measured the mass of the block to be 208 g. Considering the measurement from the balance to be the accepted value, calculate the percent of error of the estimated mass?

A. 1%
B. 2%
C. 3%
D. 4%

Question

A student estimated the mass of a wood block to be 200 g. When he placed the block on a balance, he measured the mass of the block to be 208 g. Considering the measurement from the balance to be the accepted value, calculate the percent of error of the estimated mass?

 A. 1% 
 B. 2% 
 C. 3% 
 D. 4%

anonymous · Answer

1% of 200 is 2.  Since it is off by 8 grams, then the error would be 4%.