Compute the following and determine the correct number of significant figures in the answer for the image below:

For this final practice one, let's take a look here. So what we have is we have these values within these parentheses undergoing addition. When we add them initially, what we're going to get is 940 6.476. But remember, when we're adding or subtracting, it's least number of decimal places. Here this one has 2, this one has 4 and this one has 2. So we want 2 decimal places. Because there's a 6 here, it's gonna round up. So we're gonna have 342.60 times 946.48 plus here both of these are multiplying each other when we're multiplying its least number of significant figures. This one here has 5 sig figs. This one here also has 5 sig figs. When we multiply them together, that's going to give us 7, 8 initially 78 550.6. We want 5 sig figs, so we round up to 78551. On the bottom, we have these 2 subtracting each other. Remember, when we're subtracting, we have to make sure the exponents match. The larger value of the 2 is 10 to the negative 19, so we're gonna have to change this 10 to the negative 20 to 10 to the negative 19. There's a decimal here that we don't see, so we're gonna move it over by 1 to make this number smaller. Then my exponent gets larger by 1. So we're gonna have 403 times 10 to the negative 19 plus negative 1.6 times 10 to the negative 19. So on the bottom, we're going to now multiply these 2. So it's sig figs. This one has 5 and this one has 5. So when we multiply them together, that gives me 324. Initially 324264 which I just round to 324260+78551 divided by since these both have the same exponents, we can add up the coefficients. So it's 403-1.6. So that's gonna give me initially 41.4 times 10 to the negative 19 which we can keep because they both have one decimal place just like my answer has one decimal place. Alright. So now continuing this, we're going to say we're adding the top portions together so it's gonna be least number of decimal places. Neither answer has a decimal place. So when I add these two numbers together, it gives me 402811 divided by 401.4 times 10 to the negative 19. We're dividing now, so it's gonna be the least number of sig figs. This value here has 6 sig figs and this one here has 4 sig figs. So my answer at the end has that 4 sig figs. Initially, I'm gonna get 1.00352 times 10 to the 22. But again, I want 4 sig figs, so it rounds off to 1.0 4 because remember, I want 4 sig figs. This is 52 here so this rounds up. Times 10 to the 22. So that would represent our final answer once we've done it step by step doing all the orders of operations and rules we've learned thus far to get that final result. So just remember, keep in mind, on your exam, you may be asked something like this where you have to go step by step following the rules that you've learned in order to show how you got that final answer. Remember all the results that we did in order to get each one of these answers at the end.