Dion made $67,785 last year . express this number as a single digit times of a power of ten rounded to the nearest ten thousand .

7 *

Explanation:

First, round 67,785 to the nearest ten thousand;

The 6 is in the ten thousands place, since it is greater than 5, it will be rounded up to 7. The number therefore becomes;

=70,000

Next, estimate the 70,000 to a single digit times a power of ten.

Maintain the 7 digit, then find a number that 10 is raised to, to get 10,000;

10^1 =10

10^2 = 100

10^3 = 1000

10^4 = 10,000

Therefore, 7 times 10 ^4 will give you 70,000;

70,000

= 7 *