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Question Completion Status:QUESTION 6Clear decimals in the following calculation: Do NOT calculate: 0.35 25 1.7 0.735 17 2530 2 3 75 35 25 70QUESTION 7Convert 350 m...

Question

Question Completion Status:QUESTION 6Clear decimals in the following calculation: Do NOT calculate: 0.35 25 1.7 0.735 17 2530 2 3 75 35 25 70QUESTION 7Convert 350 mLto L0 3.5L

Question Completion Status: QUESTION 6 Clear decimals in the following calculation: Do NOT calculate: 0.35 25 1.7 0.7 35 17 25 30 2 3 75 35 25 70 QUESTION 7 Convert 350 mLto L 0 3.5L



Answers

Perform each of the following calculations, and give an answer with the correct number of decimal places: a. $5.08 \mathrm{g}+25.1 \mathrm{g}$ b. $85.66 \mathrm{cm}+104.10 \mathrm{cm}+0.025 \mathrm{cm}$ c. $24.568 \mathrm{mL}-14.25 \mathrm{mL}$ d. $0.2654 \mathrm{L}-0.2585 \mathrm{L}$

We're gonna be adding and subtracting some problems. Very basic problems. But we need to use significant figures to express our answer. So remembered that whenever you are adding or you are subtracting, you need to express your answer with the least ml off decimal places. So how do we do that? Very simple. So what you're gonna do is that you're gonna count how many decimal places this number half. So this number has toe the small places the's number has through either a small places. So I know that my answer needs to have one and two this in more places, whatever it is that the front doesn't matter. But after your decimal point, you need to have two places. So let's put up our calculators and ah, we're gonna put that number in there. So I have 45 point for the A that I'm going to be adding to a 45.0.57 and that has given us that number. So I know that after this decimal, I need to have only two places. So he said the 53. But since this is seven or more, I need to add one more to the three. So your answer is gonna be 53 0.50 four. And do not forget your units. These are sending meters. This to the same with this one. This one has. So the summer places this 1/2 1 the small place. And this one we're here has 12 on three. So I need to choose one. So my answer is going to have one decimal place and we're gonna do the same. Let's get out of calculators and we're gonna put that number 23.45 blows 104 When one close 0.0 25. All of those are grams. So I know in here that whatever is before, that is my point. Don't don't count. You need to write them off course, but it doesn't count on. I have a five in here, but since I have a seven at the right, I need to up one. So this is gonna be 1.27 1.27 127 0.5. So we have 127 0.5 per se. Now, let's do our next one. We're gonna do exactly the same What we're gonna do is that we're gonna count. They're similar places. So I have 123 the small places in here. I have one decimal place in here, so that means that my answer needs to have one decimal place. So I'm gonna put the This is my point on my lines. Perfect. And then again, with the calculator, I have 145.6. 75 that I'm going to subtract from 24.2 and I need only one decimal place. So I need this four. This is a seven. I'm gonna make, you know, five. So my answer is gonna be 121.5 and the last one, I have one. We're not counting significant digits. We are counting the similar places. So we have one and two. They're similar places on. I have 1 to 3 decimal places, so you know that my answer needs to have been one and to So let's do it again. One groin, zero a minus 0.5 85. And I need to significant Read it. Still, DC's off for a nine, but since this is a five, these gets into a 10 and the one of the 10 gets into the five. So you're gonna have zero point 50 leaders and right here, maybe leaders. And right here, grams, it's very important that you right all the time. You're units east. Your problem is giving you unit.

To find the number of milliliters left. We can simply say that it starts with 375 milliliters and we're given that 308 milliliters is removed. So that is the amount which is taken out. And so this means that there would be exactly 67 milliliters remaining. And note that because we have originally two values of liquid which are exact than the final answer will also be exact, and so it will be exactly 67 milliliters.

So for this problem, we're going to convert 0.75 courts into a number of leaders and then a number of milliliters to get our final answer. So let's get started. Setting this up in everything says your 0.75 quartz over one and record to multiply this with by our first conversion factor with courts on the bottom and leaders on the top where everyone leader, there are 1.6 quarts and then we're going to multiply this by our second conversion factor with leaders on the bottom, middle leaders on the top When everyone leader, there are 1000 milliliters. So notice how our units quartz cancel out in our units and leaders cancel out. So then we're left with our final answer having the units of milliliters, which is exactly what we want. Slits divides your 0.75 by 1.6 and most play That number by 1000 2 gets 707 points. 55 mill leaders And the problem says to Rounder, if I don't answer to the nearest temp, so that will give us an answer of 707.6 No leaders

When we multiply in this single number by 10 to the thief. That's my point. Moves five places to the right. What is one? We must apply additional by 10 to them and serve in with this more point Moves seven places to the left.


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