Question

Select the answer choice below that represents 68,921 in scientific notation.


6.8921 x 102

6.8921 x 10-2

6.8921 x 10-4

6.8921 x 104

Answer 1

the last one

Answer 2

negative exponents are used to represent small numbers
positive exponents are used to represent large numberfs
move decimal to the right (using the number of the exponent) for the positive exponent
move decimal to the left (using the number of the exponent) for the negative exponent