Which expression could be a calculator’s display for the number 135,000,000,000,000?

A.
0.135e15

B.
1.35e14

C.
13.5e13

D.
134e−14

Question

Which expression could be a calculator’s display for the number 135,000,000,000,000?
 
 A.
0.135e15
 
 B.
1.35e14
 
 C.
13.5e13
 
 D.
134e−14

imstuck · Answer

The calculator will always show one number with a decimal point and then the e with the number of 0's.  This one does not have a negative power for the number of 0's because the number is bigger than 1.  If it was smaller than 1, the power would be negative.  So taking that info into consideration, what would your calculator show for this very very very large number?

zpupster · Answer

you first count all the numbers behind the 1
14
next you place a decimal there
1.35 the "e" stands for ( x 10^14)
the fourteen is positive because you moved decimal to the right

this is generally called scientific notation.
1.35 x10^14