For more information, please see full course syllabus of Basic Math

For more information, please see full course syllabus of Basic Math

## Discussion

## Study Guides

## Practice Questions

## Download Lecture Slides

## Table of Contents

## Transcription

## Related Books

### Ratio

#### Related Links

- Ratio: A comparison of two quantities by division
- Rate: A ratio that compares quantities in different rates
- Unit rate: A rate with a denominator of 1
- To convert units, cross-cancel out units until you’re left with the correct unit

### Ratio

[(12 ÷12)/(24 ÷12)]

[(42 ÷6)/(48 ÷6)]

- green:red

- boys:girls
- Number of girls = 32 - 17 = 15

- male:female
- Number of female = 10 - 3 = 7

$ 18.00 for 12 boxes

- [($ 18 ÷12)/(12 boxes ÷12)] = [$ 1.5/box]

A car goes 200 mi on 5 gallons of gas

- [(200 mi ÷5)/(5 gallons ÷5)] = [(40 mi)/gallon]

A box falls 130 ft in 10 seconds

- [(130 ft ÷10)/(10 seconds ÷10)] = [(13 ft)/second]

- 1 mi = 5280 ft

1 hour = 60 min - [(10 mi)/(1 hour)] ·[(5280 ft)/(1 mi)] ·[(1 hour)/(60 min)] = [(880 ft)/min]
- [(880 ft)/min] ·[(10 min)/(10 min)] = [(8800 ft)/(10 min)]

- 1 gal = 4 qts
- 1 min = 60 seconds
- [(2 gal)/(1 min)] ·[(4 qts)/(1 gal)] ·[(1 min)/(60 seconds)] = [(8 qts)/(60 seconds)]
- [(8 qts ÷2)/(60 seconds ÷2)] = [(4 qts)/(30 seconds)]

*These practice questions are only helpful when you work on them offline on a piece of paper and then use the solution steps function to check your answer.

Answer

### Ratio

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

- Intro 0:00
- Ratio 0:05
- Definition of Ratio
- Examples of Ratio
- Rate 2:19
- Definition of Rate
- Unit Rate
- Example: $10 / 20 pieces
- Converting Rates 6:46
- Example: Converting Rates
- Extra Example 1: Write in Simplest Form 16:22
- Extra Example 2: Find the Ratio 20:53
- Extra Example 3: Find the Unit Rate 22:56
- Extra Example 4: Convert the Unit 26:34

### Basic Math Online Course

### Transcription: Ratio

*Welcome back to Educator.com; for the next lesson, we are going to go over ratio.*0000

*A ratio is when you compare two things.*0007

*You are making a comparison between two quantities; it is also same as division.*0011

*If you look here, there is three ways to express a ratio.*0020

*There is three ways to write a ratio.*0023

*If A is 1 and B is something else, you can say A to B.*0028

*You can write it out, A to B.*0033

*All this, whether you write it like this, like this, or like this, they are all read as A to B.*0036

*But you can write it like this, like this using a colon or as a fraction A to B.*0045

*You are still comparing A and B.*0053

*For example, if I said what is the ratio, you are comparing boys to girls.*0056

*Because I said boys first, boys is going to be written as A, the first one.*0064

*Then girls has to be the second one; boys to girls.*0071

*If I ask for the ratio of boys to girls, then I can't give you the number of girls to boys.*0077

*You can't do this. You have to write out the ratio in the order that was asked for; boys to girls.*0086

*If I say there are 5 boys and there are 3 girls, then the ratio of boys to girls would be 5 to 3.*0095

*You can also write it as 5 to 3 like that.*0108

*If I ask you what is the ratio of girls to boys, then you would have to*0114

*give me this number first, the number of girls to the number of boys.*0117

*You always have to write out the ratio in the order that it was asked for.*0124

*A to B, A:B, and A/B as a fraction; this is called ratio.*0132

*A rate is a ratio; you are still comparing A to B.*0141

*But you are given different rates; for example, if I say miles per hour.*0148

*Miles per hour would be... you have the number of miles and you have however many number of hours.*0158

*You are comparing, you are making a ratio between the number of miles and the number of hours.*0169

*A rate would be a ratio, same thing, A to B, but using different rates.*0175

*If I say $5 for 5 candies, then that is a ratio.*0183

*You are making the comparison between the amount over the number of candy.*0194

*If you make a comparison between two things, it is called a ratio.*0204

*When those two things have some kind of unit, then it is called a rate.*0209

*A unit rate is a rate with a denominator of 1.*0219

*That means that if I say I traveled 2 miles in 2 hours.*0225

*Here is my ratio, 2 miles every 2 hours; this is my ratio.*0239

*A unit rate would mean to make this, the denominator, the bottom number, a 1.*0247

*That means I need to change this to become 1 hour.*0255

*That would be a unit rate.*0259

*That means in order to turn this 2 into a 1, I have to divide the 2.*0261

*I am going to divide this by 2 which means I have to divide the top number by 2.*0267

*This would be 1 mile per hour because it is 1 hour.*0274

*1 mile per hour would be the unit rate.*0282

*This alone would just be a rate.*0286

*But when you make the denominator a 1, a unit of 1, then this is a unit rate.*0290

*This here is a unit rate because the denominator is 1.*0298

*Here is an example; $10 per 20 pieces; that is like the candy example.*0306

*If it is $10 for every 20 pieces,*0310

*in order to give me a unit rate, I want to find out how much it is per piece.*0323

*One piece, I am turning this denominator into a 1.*0328

*That means in order to turn this denominator into 1, I have to divide it by this number, divide it by itself.*0333

*That means I have to divide this top number.*0340

*Because this is money, I want to change it to a decimal.*0346

*I know that 10 divided by 20 or 10 divided by 20 is going to give me 0.5.*0350

*0.5 in money is the same thing as 50 cents.*0368

*If I add a 0 here, that becomes 50 cents.*0373

*Not 5 cents, be careful; this is 50 cents.*0375

*The unit rate would be 50 cents per piece.*0380

*I can put 1 in front of it if I want.*0391

*But if I just say per piece, then I am talking about 1 piece.*0393

*You can leave it like this; this would be your unit rate.*0400

*When you are converting rates, rate remember it is a ratio of two different rates.*0408

*You have different units on the top and the bottom; that is a rate.*0416

*To convert rates means you are going to go from whatever rates they give you,*0422

*whatever units they give you, and you are changing it to something else, changing it to different rates.*0429

*You are converting them.*0433

*For example, if I have miles per hour, let's say I want miles per hour.*0435

*I am going to put miles on top; I am going to put... 1 mile per hour.*0444

*This is the rate that I am starting off with.*0451

*I want to convert it to feet per minute.*0455

*This is miles; mi is miles; min is for minutes.*0467

*I am going to convert this number here, this ratio, this rate, to this rate, this ratio.*0471

*Remember rates are ratios; I am going to convert this to this.*0482

*That means miles I need to change to feet and hours I am going to change to minutes.*0486

*Miles and feet, they are both measurements of distance.*0493

*Mile and feet, they are both measuring the distance of something.*0498

*Hour and minutes, they are both measuring time.*0503

*I can convert miles to feet and hours to minutes.*0507

*In order for you to be able to convert rates, this to this, you have to know the equivalent units.*0512

*How many feet equals a mile?--1 mile equals 5280 feet.*0525

*This and this are the same; 1 mile is equal to 5280 feet.*0540

*Same thing for hours and minutes; I know that 60 minutes equals 1 hour.*0545

*If it helps, you need to just write this on the side.*0556

*You are going to use this to help you convert rates.*0559

*First thing I do, I am going to start here and I am going to end here.*0565

*I am going to change all these into these.*0571

*I am going to start from 1 mile to 1 hour.*0574

*I am going to multiply it to different units because I can cross cancel things out.*0582

*If I say that 5280 feet is the same thing as 1 mile, if they equal each other,*0594

*then I can say 5280 feet over 1 mile is going to equal 1 because this number and this are the same thing.*0603

*We said they are equal; this over this is equal to 1.*0623

*Anything over itself is 1.*0629

*If I said, for example, 5/5, isn't that 1?--because it is the same number over itself.*0631

*Same thing here; this equals this.*0638

*If I say 5280 feet over 5280 feet, isn't that equal to 1?*0642

*This does equal 5280 feet.*0649

*If I write it like this, you have to understand that this is the same thing as 1.*0653

*If I multiply this by 1, I am not changing this.*0659

*I can multiply this by 1 if I want because it doesn't change.*0665

*Instead of multiplying it by 1, I want to multiply it by this.*0670

*This is the same thing as 1.*0674

*I am going to multiply all this to this.*0682

*I want the miles to go away because the miles is going to have to change to feet.*0689

*I need to the miles to go away.*0696

*In order for me to cross cancel the miles, I have to have one on the top and one on the bottom.*0697

*This miles is going to go down here.*0702

*On the top, it is going to go 5280 feet.*0705

*That way this and this will cancel.*0718

*Again this whole thing is just equal to 1.*0724

*I can just multiply it to this if I want.*0730

*It is not going to change my answer because I am just multiplying it by 1.*0734

*Same thing for hours.*0740

*I also know that since this 60 minutes is equal to 1 hour,*0743

*if I put 60 minutes and I divide it by 1 hour,*0749

*since this whole thing equals this whole thing, this is also equal to 1, isn't it?*0755

*They equal each other.*0760

*Whenever the top and the bottom equal each other, that always equals 1.*0762

*I want to multiply this whole thing to this whole thing because again this is equal to 1.*0769

*I want the hours to go away.*0777

*That means if this is already in the bottom, then I need to write this on the top.*0779

*This is going to go 1 hour over 60 minutes.*0783

*I just flip this; this went to the top; this went to the bottom.*0790

*Because again if this is the same thing as this, then isn't this over this the same thing?*0795

*I am writing it on the top and the bottom, depending on where I have to cancel it.*0803

*If this is already in the bottom, then I need to cancel this.*0808

*That is going to go like that.*0811

*If I look on the top, what units am I left with?--feet.*0816

*For my answer, if I multiply all this out, then I am going to be left with feet which is what I want.*0823

*On the bottom, what am I left with?--minutes.*0828

*That is what I want left on the bottom.*0834

*I know that all I have to do is now solve this out.*0836

*I cancelled out everything that I need to cancel out.*0840

*If I just multiply this out and then multiply that out, solve for it, I will get my answer.*0844

*Here my top is going to be 1 times 5280 times 1 which is 5280 feet over 60 minutes.*0852

*1 mile per hour is the same thing as 5280 feet over 60 minutes.*0873

*This would be my answer; I can simply this if I want.*0885

*This is a ratio, is a rate.*0890

*But if I want to change it to a unit rate, I can divide this by... let me use a different color.*0893

*I can divide this by 60 and then divide this by 60.*0901

*5280 divided by 60 is going to give me... I am going to cross out these 0s.*0910

*Remember you can cross out the 0s if you want.*0921

*It is going to give me... 8, 4, 8; it is going to give me 88.*0926

*Again to multiply this, you are going to do 6 times 8.*0949

*Write it out, 48; my remainder is 4.*0952

*I am going to bring down this 8; then 6 times 8 is 48.*0954

*My answer is 88 feet per minute; this would be my unit rate.*0966

*Let's do a few more examples; the first example, write in simplest form.*0981

*Here these are just ratios; it is comparing this number to this number.*0991

*They look like fractions.*0997

*But you can also think of these numbers, the top number and the bottom number as ratios.*0998

*It is like division.*1005

*To write this in simplest form, 12/36, I can look for a common factor.*1008

*The greatest common factor is 12 because 12 goes into 12 here and 12 goes into 36.*1019

*If you don't see that 12 is the biggest factor,*1030

*you can just look for any factor because 12 and 36 have a lot of common factors.*1032

*If you want, you can just divide the 2 first and then just keep making the numbers smaller.*1038

*You can divide this by 4; divide it by 3.*1043

*Since I know that 12 is my biggest factor, I am going to divide this by 12 and then divide this by 12.*1050

*Whenever I am going to simplify, then I need to divide both*1057

*the top number and the bottom number by the same number, the same factor.*1060

*This is 1 over... 36 divided by 12 is 3.*1066

*This is saying that the ratio of 12 to 36 is the same as 1 to 3.*1074

*They are the same ratio; they are equivalent; they are the same.*1081

*This next one, I know because this ends in a 0 and this ends in a 5, that they are both divisible by 5.*1088

*I am going to take 30 divided by 5; 35 divided by 5.*1100

*30 divided by 5 is 6; 35 divided by 5 is 7.*1108

*This is simplest form.*1118

*That means the ratio of 6 to 7 is the same as 30 to 35.*1119

*Same thing here; let's divide this by...*1125

*Again if you just see any common factor, you can just keep dividing until you get simplest form.*1128

*Or if you find the greatest factor, that would be the fastest way.*1137

*But let's say that we wanted to just divide this by 2 because I just noticed that they are both even.*1141

*That is not the greatest factor; but let's just do that first.*1147

*I am going to divide both the top and the bottom by 2.*1152

*This is going to be 8/12.*1155

*This is still not simplest form because they are both even still.*1161

*4. or maybe 2 if you just notice that they are both even numbers.*1167

*But from these two, the greatest factor is 4; let's just divide them by 4.*1174

*8 divided by 4 is 2; over 3; that would be simplest form.*1180

*For this, let's see, this is not an even number so I know that 2 is not going to go into them.*1187

*If I add these two together, 5 plus 1, that is 6.*1195

*6 is a multiple of 3.*1200

*This bottom one, 1 plus 9, 9 is a multiple of 3.*1204

*So I know that 3 can go into both of these.*1209

*Divide this one by 3; divide this one by 3; 51 divided 3.*1213

*If you don't know what that is, you can always just divide it.*1222

*51 divided by 3; 1; subtract the number; bring this down.*1226

*That will be 17 over... 18 divided by 3; 3 times what equals 18?*1236

*That is 6; that would be simplest form.*1246

*Next example, Tommy has 4 blue marbles, 3 green marbles, and 7 red marbles in a bag.*1254

*Find the ratio of red to blue marbles; 4 blue, 3 green, 7 red.*1264

*We want to find the ratio of red to blue.*1274

*The ratio is going to be red to blue.*1278

*How many red do we have?--7 to 4 blue.*1286

*Make sure you have to write it as 7 to 4 and not 4 to 7.*1292

*Because they ask for red first before the blue, you have to write out the red first.*1298

*It is 7 to 4; you can say 7 to 4.*1304

*Or you can say 7 to 4 like that as a fraction.*1309

*Next, out of 27 students in classroom, 15 are boys.*1317

*Find the ratio of boys to girls; ratio is boys to girls.*1323

*They don't give us a number of girls.*1333

*They just tell us that there is 15 boys.*1334

*But I know that if there is 27 students total and 15 are boys, then the rest of the students have to be girls.*1339

*I have to subtract 27 students minus 15; I am going to get 12.*1350

*That means I know that 15 are boys and 12 are girls.*1358

*The ratio of boys to girls would be 15 to 12 or 15/12.*1364

*Find the unit rate.*1379

*Remember unit rate is when you have a ratio and the bottom number, the denominator, has to be 1.*1380

*Here the ratio is 250 for every 2 dozen.*1389

*I want to find how much it is going to be for 1 dozen or how much per dozen.*1403

*Think of it as per.*1411

*Every time you see unit rate, you are going to think of per.*1413

*Per whatever the unit is on the bottom; how much per dozen?*1418

*That means I need to turn this into a 1.*1424

*I divide this by 2 then to turn 2 divided by 2 into 1.*1428

*Then I have to multiply the top by 2.*1433

*250 divided by 2.... remember to bring out the decimal.*1436

*It is going to be 1; 2; bring down the 5.*1444

*2; 4; 1; bring down the 0; 5.*1455

*Going to be $1.25 per dozen; there is my unit rate.*1460

*A car goes 300 miles... mi means miles... on 10 gallons of gas.*1479

*300 miles on 10 gallons of gas; find the unit rate.*1488

*That means I want to turn this into 1.*1498

*It is going to be how many miles per gallon.*1501

*Then again divide this by 10; divide the top number by 10.*1504

*300 divided by 10... every time you divide by a number with the 0 at the end of it,*1512

*and they both have 0s at the end, you can just cross out one of the 0s.*1519

*If I cross out this 0 and cross out this 0, then I am going to be left with 30.*1524

*30 miles per gallon; this is the unit rate.*1529

*A skydiver falls 240 feet in 5 seconds; 240 feet every 5 seconds.*1541

*How many feet per second?--1 second; divided by 5; divided by 5.*1556

*240... let's do it over here; 240 divided by 5 is going to be 4*1564

*because that is going to be 20; 4, 0; that will be 8.*1571

*48 feet per second; here is my unit rate.*1581

*The fourth example, we are going to convert the units.*1595

*This is going to be the most difficult part of this lesson.*1599

*But just make sure you are going to...*1603

*Just try to cancel out the units so that you end up with the units that you want for your answer.*1606

*A car is moving at 8 miles per hour.*1616

*I am going to write that as a fraction; 8 miles per hour.*1620

*I want to convert this to feet on the top with what units on the bottom?--minutes.*1627

*I know it is 10 minutes.*1638

*But then I just want to focus on converting these units first--miles per hour to feet per minute.*1639

*I am going to start off here; I am going to write that over 1 hour.*1657

*Again I am going to multiply; I want to turn the miles into feet.*1667

*On the side, let's find out... 5280 feet equals 1 mile; this equals this.*1673

*That means if I put this over that as a numerator and denominator, it is going to equal 1.*1685

*Why don't I just do that right now; I am going to do times...*1698

*From the feet and the miles, which one do I want to go as my numerator?*1701

*I want my miles to go on the denominator because I want them to cross cancel out.*1707

*From these two, I am going to put this on the bottom.*1714

*I am going to put 1 mile on the bottom and then 5280 feet as my numerator.*1717

*That way my miles cancel out.*1727

*Hours I am going to change to minutes; 1 hour equals 60 minutes.*1733

*Write that out first so you can see it; it is a lot easier.*1744

*Then from this and here, one is going to go on as my numerator.*1747

*One is going to go on my denominator.*1752

*Which one do I want to go on the top?*1755

*The hours because here the hours is on the bottom.*1758

*I want it to cancel out so I have to put it on the top.*1760

*This is going to go on the top; this is going to go on the bottom.*1763

*1 hour over 60 minutes; cross cancel that out.*1767

*Here I want to now solve this out because if I look at the top, what units are left on the top?*1779

*Feet is left which is what I want.*1789

*This is what I want my answer in; I am on the right track.*1791

*On the bottom, what do I want left?--minutes.*1797

*That is where I am at; so I am good.*1800

*Now I know I just have to multiply this out and solve these numbers out.*1803

*Before we start multiplying this times this and get a big number and then*1809

*have to divide by a big number, let's try to cross cancel some stuff out.*1813

*Anytime you are multiplying numbers and you have numbers on top and you have numbers on the bottom,*1820

*you can start cross cancelling things out if they have common factors.*1825

*First thing I see is I see a 0 here and I see a 0 here.*1829

*I can cross cancel those out.*1834

*This is going to change to 6; this is going to change to 528.*1840

*Cross out that 0; cross out that 0.*1846

*8 and 6, I know that they have a common denominator of 2.*1852

*I can cross this out, divide this by 2; I get 3; that changes to a 3.*1858

*I am going to change that because that common factor was a 2 so that changes to a 4.*1865

*That means I divided this by 2 and I divided this by 2.*1871

*This became 4; this became 3.*1875

*Here, does 528, is it divisible by 3?*1879

*If you add this, it becomes 5 plus 2 is 7; plus 8 is 15.*1886

*Is 15 a multiple of 3?--it is.*1892

*Therefore I know that this is divisible by 3.*1896

*If you are wondering what I just did, I used the divisibility rule.*1899

*The divisibility rule of 3 is you add up all the digits.*1905

*You are going to do 5 plus 2 plus 8 which gives you 15.*1911

*You are going to see if that number is a multiple of 3.*1918

*Does 3 go into that number?*1922

*5 plus 2 plus 8 is 15; 3 does go into 15.*1925

*I know that 3 will go into this number; 528 divided by 3.*1929

*This is 1; this becomes 3; subtract it; you get 2; bring this 2 down.*1940

*3 goes into 22 seven times; that is 21; 1; bring down the 8.*1948

*3 times 6 is 18; this goes away; this became 176.*1957

*Now all I have to do to find my answer is just...*1979

*Since the bottom number is 1 times 1 and these all canceled out, then it is just 1 times 1.*1983

*That is just 1 minute; I just multiplied all the numbers; I get this left.*1991

*On my top, my numerator, it is just 4 times 176.*1997

*That is 24; 7 times 4 is 28; add 2; this becomes feet.*2005

*This is in a unit rate; 704 feet per minute.*2037

*I want to know how many feet it will move in 10 minutes.*2045

*What does that mean?--this is my unit rate; I am converting the units.*2051

*This would be the correct answer.*2059

*But then it is asking me how many feet it will move in 10 minutes, not per minute.*2061

*If they asked how many feet it will move per minute or in one minute,*2069

*this would be my answer, 704 feet per minute, for one minute.*2074

*But since they are asking for 10 minutes, I need to change my denominator to a 10.*2079

*They are not asking for a unit rate.*2086

*They want to know how many feet for 10 minutes.*2088

*I need to change this 1 to a 10.*2093

*In order to do that, I have to multiply by 10.*2094

*Same thing here; I need to multiply by 10.*2098

*If I need to multiply this by 10, I just have to add a 0 at the end of it.*2102

*That is pretty easy.*2106

*It just becomes 7 thousand, 0, 4, add the 0, feet per 10 minutes.*2106

*My answer, how many feet?--it is 7040 feet.*2118

*I know that problem seemed a little bit complicated.*2128

*But all I had to do was convert the units at miles per hour to feet per minute which is what I did.*2131

*Multiply your top numbers across; multiply your bottom numbers across.*2139

*If you want, you didn't have to cross cancel all this stuff out.*2143

*That is why it looks so complicated, because we ended up cross cancelling numbers out.*2146

*But if you want, forget about the cross cancelling.*2150

*Just multiply all the numbers straight across; get this number.*2153

*Multiply all the bottom numbers straight across and get this number.*2158

*Then simplify if you want; you can do it that way.*2161

*Once we get this, this is per minute; denominator is 1.*2165

*This is our unit rate.*2170

*But then because they are asking for 10 minutes,*2173

*I need to change this denominator to 10 by multiplying by 10.*2174

*We multiply the top by 10; you get 7040 feet per 10 minutes.*2179

*Let's try one more problem; the sprinklers used 2 gallons per minute.*2187

*How many quarts will it use in 30 seconds?--again we have to convert units.*2194

*This is 2 gallons per minutes.*2202

*I want to convert this to quarts... this is quarts... per seconds.*2209

*I am going to put just 30 seconds here.*2219

*Question mark, how many quarters per 30 seconds?*2223

*I am going to start off with this again; 2 gallons per minute.*2226

*Since I need to convert gallons to quarts, I know that 1 gallon is equal to 4 quarts.*2237

*Remember if this is equal to this, I can change this to a fraction, 4 quarts over 1 gallon.*2254

*That is going to equal 1.*2262

*1 gallon over 4 quarts, that is also going to be the same.*2263

*I can multiply this by... what do I want to get rid of?*2269

*I want to get rid of the gallons first by using this.*2275

*The gallons is going to go on the bottom.*2280

*This one is going to go on the bottom; that way this will cancel like this.*2282

*This one will go on the top like that.*2287

*See how one goes on the bottom and one goes on the top?*2293

*Or one goes on the top and one goes on the bottom?*2295

*Just depends on what you have to cancel.*2299

*Then I need to convert minutes to seconds.*2303

*The minutes to seconds is going to be 1 minute is equal to 60 seconds.*2310

*I need to write the minute one on the top so that it will cancel.*2322

*This is going to go on the top; this is top, bottom.*2326

*1 minute over 60 seconds; minutes will cancel.*2330

*What units do I have left on the top?*2341

*I have quarts which is what I want.*2343

*And I have seconds on the bottom which is what I want.*2346

*Now I just have to solve it out.*2350

*If I want, I can cross cancel out this 2 and this 60.*2354

*2 goes into 2; this changes to a 1.*2359

*2 goes into 60; cut it in half; that is 30.*2362

*You can cross cancel out again.*2369

*But then otherwise you can just write it out; 4 quarts over 30 seconds.*2371

*The reason why I decided to leave it...*2384

*You could have cross cancelled it out; that is fine.*2386

*Here they ask for 30 seconds.*2390

*They want to know how many quarts will it use in 30 seconds.*2393

*Here it will be 4 quarts every 30 seconds.*2399

*I know that my answer will be 4; 4 quarts.*2404

*It is 4 quarts per 30 seconds; that is my answer.*2410

*That is it for this lesson; thank you for watching Educator.com.*2417

0 answers

Post by Karina Herrera on January 1, 2017

Awesome lesson. I love the cross-canceling you used to make converting units a lot simpler to solve. :)

0 answers

Post by ozgur kuzu on December 21, 2015

i think ms pyo is the best teacher,she explains every detail,please teach algebra 1..

0 answers

Post by Althea Cooper on December 2, 2015

awesome video! learned a lot from it.

Thanks:D

0 answers

Post by mohamed mansaray on July 6, 2014

The video lesson is precisely clear, understandable, and educative. She explained the contents to the details.

0 answers

Post by Brandon Dorman on February 12, 2013

HI,

Where can I get more practice examples and exercises on converting units and unit rates and ratios?

Thank you. :)

0 answers

Post by Jeanette Akers on October 23, 2012

I read about converting units as explained in this video a long time ago in a Saxon math textbook but never really understood how to do it. This video really clears everything up for me. Now I can do this without any hesitation or confusion. Thanks.

1 answer

Last reply by: Darren Mckenzie

Sat Jul 28, 2012 12:28 AM

Post by Wojciech Glab on February 14, 2012

hi, I have a problem where the rates is 6 eggs in 7 days and I have a remander what do I do with it

0 answers

Post by gaby mccoy on January 2, 2012

How would I solve this problem...A chain saw requires a mixture of 2-cycle engine oil and gasoline. According to the

directions on a bottle of Oregon 2-cycle Engine Oil, 2.5 fluid ounces of oil are required for

1 gallon of gasoline. For 2.75 gallons, how many fluid ounces of oil are required?

1 answer

Last reply by: Mary Pyo

Fri Feb 3, 2012 11:48 PM

Post by Abdulhadi Alawwad on November 23, 2011

hi, can i solve "Convert the units" Examples without using the same method that you did?Because I got the right answers for example 4 without using the method that you did.

thanks