Question

What is 400,000 in scientific notation
A) 40 x 10^4
B) 400 x 10^3
C) 4 x 10^6
D) 4 x 10^5

Answer 1

Answer:

D) 4 x 10^5

Step-by-step explanation:

400,000

The number in scientific notation is between 1 and less than 10.  We need to move the decimal 5 places to the left.  Since we move 5 places to the left, our exponent is 10^5

4.0 * 10 ^5