Final answer:
The power (exponent) of 10 is equal to the number of places the decimal is shifted to give the digit number. The exponential method is particularly useful notation for very large and very small numbers.
Step-by-step explanation:
When dividing by powers of 10, simply take the opposite approach and move the decimal to the left by the number of zeros in the power of ten.
The power (exponent) of 10 is equal to the number of places the decimal is shifted to give the digit number. The exponential method is particularly useful notation for very large and very small numbers. For example, 1,230,000,000 = 1.23 x 109, and 0.00000000036 = 3.6 x 10-10.