Question

Megan's science teacher gave each student in her class a 20.0 gram sample of sedimentary rock. Each student is required to verify the rock sample by taking four mass measurements. Which measurement is the most accurate of the four recorded?

A) 19.012 grams
B) 19.0122 grams
C) 19.02 grams
D) 19.12 grams

Answer 1

All of the possible values are below 20 so you are looking for the largest value because this will be closest to 20. D is the closest because it has 1 in the tenth column whereas the have 0 in this column. This means that D is the largest value