Question

Convert 65,000,000 to scientific notation.

6.5 ⋅ 106
6.5 ⋅ 107
6.5 ⋅ 10−6
6.5 ⋅ 10−7

Answer 1

6.50*10^6

Answer 2

I think one sec

Answer 3

6.5*10^7

Answer 4

sorry about that. Thats the right answer.

Answer 5

You can already cross out choices C and D because if you have a negative exponent, then you know that the decimal will move towards the left and get a number less than zero.

You are now left with choices A and B. Choice A says that you need to move the decimal six spaces to the right.

That is not the number that you need. So you know that you need to move the decimal an extra space (7 spaces) and that is also the choice that is left over.