Lars read that there are about
210,000 grains of salt in one
teaspoon.
How is 210,000 written as a power
of ten?
A. 210 X 104
B. 21 X 104
C. 21 X 108
D. 2.1 X 10^
{The answer is B}, because 21 times 10 is 210 and then do power of ten, power of ten 3 more times will get you to 210,000. (Basically adding [4] zeros at the end)
