Question

When 70,000 is written as 7.0 *10*n, what is the

value of n ?
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

Answer 1

70,000 is 7.0x10^4

n = 4

Increase the 10 exponent by 1 each time the decimal point moves one space to the left.

Explanation:

70,000

7,000x10^1

700x10^2

70x10^3

7.0x10^4