1 or 0
There should be exactly one digit.
One digit
On digit (not didgit!).
there should be a decimal ... maybe 0.0000876 = 8.76 x 10-5
Note that 4491 is interpreted as 4491.0. Then, move 3 decimal places to the left from the starting point. Therefore, you should get 4.491 x 10³ in scientific notation.
2.209x10^2. But scientific notation should only be used on very large and very small numbers.
What you would do on this questions is you would move the decimal to the right and o.ooooooo875 in scientific notation should be 8.75 × 10-8
There should be exactly one digit.
One digit
On digit (not didgit!).
there should be a decimal ... maybe 0.0000876 = 8.76 x 10-5
To compute very large or very small numbers.
In scientific notation, you should have only one digit to the left of the decimal point.
Note that 4491 is interpreted as 4491.0. Then, move 3 decimal places to the left from the starting point. Therefore, you should get 4.491 x 10³ in scientific notation.
Since we need to shift 5 decimal places to the right to obtain the value in scientific notation, n = -5 for base 10.
A number in scientific notation should have one number before the decimal place then two after. You move the decimal so this is true, then the number of places you moved the decimal will be the exponent. If you move the decimal to the right your exponent will be negative, if you move it to the left it will be positive. In this case you would move the decimal 5 places so you have 1.05x10^-5.
The answer depends on why you move the decimal point to the right. In the context of scientific notation, you increase the exponent by the number of place that the decimal place is moved.