Using the method discussed above, determine the answer to the following question. All right, so remember we're going to go with the largest value. The largest value we have here is 10-11. That would mean my other two values have to be converted to their exponents. Also become ten to the -11, so this stays the same, so we're going to bring it over.
Now for the next number, it's 10-12, so I need to need it to increase by 1:00 so that it matches 10-11. If I want to increase it by one, that means I need to make my coefficient smaller by 1 decimal place so I can move this decimal over here. So it's going to become -0.117×10-11. This one is to the 10-13. I also needed to get it to 10-11, but now I'm going to have to move it 2 decimal places, so it's going to go 1/2. So it's going to become 0.0335×10-11.
Now that all the exponents are 10-11, that just comes down and stays constant. So it's going to be this minus this minus this to give me 8.9295. But remember when it comes to adding and subtracting, we want the least number of decimal places. So here this one here has 2 decimal places, this one here has three decimal places, this one here has four decimal places. So you want least number of decimal places. So we need 2. So it's going to become 8.93×10-11 as my final answer.
So that'll be my answer when I'm converting all of my scientific notation values to the same exponents and then subtracting them from one another.