what is 58,000,000,000 estimated as the product of a single digit and a power of 10?

A.5 * 10^9
B. 5 *10^10
C.6*10^9
D.6*10^10

Question

what is 58,000,000,000 estimated as the product of a single digit and a power of 10?

A.5 * 10^9
B. 5 *10^10
C.6*10^9
D.6*10^10

triciaal · Answer

to put in scientific notation the format is a * 10^n where a is between 0 and 10 ; n is an integer.
count off how many places and in what direction you move the decimal to find A 
when you move left you are dividing so you multiply to keep the balance
when you move right you are multiplying so you divide to keep the balance. 
n is the number of places moves.

triciaal · Answer

how many places do you need to move and in what direction?