Question

What is 71,000,000 converted to scientific notation?

A. 71 x 100,000
B. 7.1 x 100,000
C. 7.1 x 10-7
D. 7.1 x 107

Answer 1

Answer: D)
`7.1 * 10^7`

Step-by-step explanation:

Place the decimal point between the first two digits of the given number. Erase everything after the '1'. So we have 7.1

To get back to 71,000,000 we would need to move the decimal point 7 spaces to the right

So that's why
`7.1 * 10^7 = 71,000,000`

If the exponent was -7, then we would move the decimal point 7 spaces to the left.

Answer 2

7.1 × 10 7

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 1010. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.