Explanation:
Scientific notation is written in the form

n is an integer between 1 and 10
Positive integer as exponent means a large number
Negative integer as exponent means small number
e.
First we have to add 9.10 and 2.20

But the number has to be between 1 and 10 so we move the decimal one place to the right

Then we have to add the exponent

We are only adding the exponent

Because we moved the decimal one place more we add

So the answer is

f.
The problem is

There is a problem. The problem is one is at scientific notation a d the other isn't. So we have to turn 1113.0 to a scientific notion by moving the decimal three places to the left

We also have another problem. The problem is 14.6 as we said before it has to be between 1 and 10 so we just have to move the decimal to the left on time

The we just add 2+1 to get 3
Now we just subtract


Because it has to be between 1 and 10 we move one place to the right

When we subtract 3 and 3 we get zero but because we moved one place to the right we get

So the answer is

a.
The problem is

The first step is to divide

The we subtract the exponent

So the answer is

b.
This problem is

First we multiply

Because it has to be between 1 and 10 we have to move the decimal to the right

Now we add the exponent

But we also have to add one because we moved the decimal to so we add 1 to it so we get 13
The answer is
