Percentages, Ratios, Conversions....One trick to work them ALL out
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- Опубликовано: 12 ноя 2023
- Ratios and proportions, scaling up and down, currency conversions...even percentages - these are easy to do using this easy to apply method.
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It really helps and is appreciated!
Math broken down like this makes me feel like a genius lol I’m about to make myself a study sheet just to get these methods memorized! I hope you have stuff in graphs. I’m taking my HiSET on the 30th and onky want to do it once then my ASVAB
Im doing this for the military thanks man , I’m still learning
Same!
Excellent man keep doing these🎉
This one is actually a new technique to me, thx
Fun method. Very easy. It helped in my exam🎉
same
Learnt something new thanks
❤ makes me happy
Core-De-Ahl... lol.. love it!
I would normally do 5 eggs divided by 3 eggs times 2 milk; but same answer! 😊 1:53
Great fun, never seen this method in use. I look at these questions and answer them thus. 1. (650/11)x2. And 2. (3/13)x2. This style of question is common in construction related examinations in reference to concrete design. Where cement, water, coarse aggregate, fine aggregate and and admixtures are combined in ratios to deliver concrete that meets specification.
Does the box method extend to multiple ratios?
Nice
Thanks
Draw a box instead of notations/symbols and call it a new easy trick. Its actually easier if you dont draw a box and draw the fraction bars and equal signs. Less and also shorter lines. Even easier if you dont write anything but the numbers. And even easier then that if you dont do anything and just guess randomly.
What whiteboard are you using I want to use it well can you give me the link to download your whiteboard
In the car distance problem, could you also first convert the 3 hours into 180 minutes, multiply 130 by 45, then divide the result by the 180?
You can also convert hours into minutes first then divide 130 by 180 to get a per minute value. You then multiply that result by 45.
In the interest of keeping things easy, I would 100% convert hours to minutes vs minutes to fractions to decimals.
You could. As long as units match.
I would put $17 next to £14 and that because you put eggs next milk before?
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LMAO I wonder if he saw this
@@AnonymousCommentor_ I generally fell bad I might have made him uncomfortable so uughhhhhhh :/
I can replicate the method, but why does it work?
It’s just a visualization of the rule of three.
Both sides are equal with a single unknown. As long as you keep like units in the numerator and like units in the denominator, it will work out with cross multiplication.
3Eggs/2Milk = 5Eggs/xMilk
Each side will still be equal if you flip both sides. Since we want to find x and they are equal with either arrangement, I like to start with x in the numerator to save a step.
2Milk/3Egg = x/5Egg
5Egg(2Milk/3Egg) = x
the Eggs cancel and you end up with: 10Milk/3 = x
Think about what the units of your answers are. If you set it up the other way, you get:
3/10Milk = 1/x
It works both ways, but you need to convert back to a whole number from a fraction. Save yourself trouble by getting "x" to the numerator early.
Math
Isn't this how everyone solves these kinds of problems anyway? 😮 Where is the trick?
I just do mental math and multiply the numbers till the fit. For the thumbnail, 130 miles in 3 hours, how much in 5 hours. 130 divide by 3 is 43.33, multiply 43.33 by 2 you get 86.66 add 130 and you get 216.66 rounded to 217.
For the question 130 miles in 3 hours, how much in 45 minutes. 3 hours is 180 minutes, divide by 4 is 45. So all you gotta do is divide 130 by 4 and you get 32.5.
Not really.
@@BigHenFor I am a math teacher and I teach my students to solve such questions this way. That's why I was surprised when I watched the video.
Box method is good. But please document your work correctly. If axb=c, then a=c, yet you show, for example, 2x3=6/13. This is NOT correct. Your “tricks” are excellent and well explained- but you sometimes document carelessly