Answer at 12:05 But in my opinion you should simplify the fractions first. 3/15 -> 1/5 2/32 -> 1/16

Really enjoy your teaching!! Not sure if you mentioned it here, but one can reduce before adding the fractions and it will help simplify the problem (3/15 to 1/5 and 2/32 to 1/16).

@DK-dt1yl

2 жыл бұрын

Having to reduce the answer after cross multiplying indicates one should have reduced the terms beforehand.

@jeffhutchison7263

2 жыл бұрын

@@DK-dt1yl Exactly and it is quicker!

@boeingnz

2 жыл бұрын

After the reduction you can do it in your head. When you get the top numbers to one just add the bottom numbers for the top number of the product. And multiply for the bottom. (16+5) / (16×5)

@charlesramsay2401

2 жыл бұрын

I don't see how he got 2/32 into a denominator with a 5.

Keep up the videos I watched your math videos tonight and it helps me.

I am enjoying brushing up on my high school math which I took in the early 70s; thank you very much. I am seeing old formulas and methods that I knew very well at one time. I am also surprised at how much I have actually remembered. I may be missing something but in my mind, I didn't see the bow tie method any different than finding the LCD. It appeared that you basically did the very same thing only using the bow tie; you still multiplied the numerators by the same numbers. Is there something that I am not understanding?

Reduce first if you can...makes the numbers smaller and much easier to work with....

Everything says Digital Download product, will I be able to turn the parts I need into a Google Doc?

To do this with no calculator, I simplified both fractions. 3/15 reduced to 1/5, 2/32 simplified to 1/16. 5 X 8 =40, so in my head, 5 X 16 = 80. 16/80 + 5/80 = 21/80.

It is easier for this problem (at least for me) to change it to 1/5 + 1/16. When you work this problem answer is 21/80 which he ends up with after reducing to the lowest fraction.

When I went to school 1960s they used to call the bow tie method cross multiplication.

First simplify to 1/5 + 1/16 Multiply by 16 to make 16/5 + 1 = 4 1/5 Multiply by 5 to make 21 Since you multiplied, now divide by (5x16=) 80 to give the answer 21/80

Reduce the fractions: 3/15 = 1/5 and 2/32 = 1/16. So, 1/5 + 1/16 is easier to calculate in your head.

I got it, but I learned about the bow tie method. Thanks.

In this problem, could you have reduced 3/15 to 1/5, and 2/32 to 1/16, then do the bow tie?

@007mrdarcy

5 ай бұрын

Exactly how i did it.

Yep! I'm good at reducing indeed. That's what I did first before using the bow tie hack to find the solution. So, 3/15 = 1/5 and 2/32 = 1/16. Then it's a piece of cake. 16 X 1 = 16. 5X 1 = 5. 5 X 16 = 80: 16 + 5 = 21 over 80 There you go: 21/80.

you have just done the same thing twice, you multiplied the two denominators together, 3*5 to give you 15, for your LCD, and then multiplied the numerator with the opposite denominator.

NEVER make fun of old school. Old School is how we got to today. The mercury rocket we sorted out using slide rules. The same goes for the transistor. Henry Ford worked late nights in his Detroit garage figuring out how to make his horseless carriage work. And those same lessons learned are used today at Tesla. And Intel. And Space X. The young engineers of today build upon what the old schoolers sorted out to build self driving cars. And drones. And Robots. !

Honestly, finding the LCD is usually a waste of time. Just find _a_ common denominator and reduce afterword.

Maestro, judging by some of the comments your words are ‘pearls before swine’.

The problem with the ‘bow tie’ technique is that it’s rote learning with no understanding of what you’re actually doing. If you forget it you’re stuck.

Consider doing a short video on WHY some misinformed commenters complain that you take too long to explain a problem. They need to understand you aren't ( to use an old metaphor) "giving them a fish but TEACHING THEM HOW TO FISH". I'm sick of these critics and I'm sure you MUST be too!

@mdstarr1

2 жыл бұрын

You mean teaching how to fall asleep.

@jamespn

2 жыл бұрын

The teaching is great, but the shilling takes time to tell you about his other content.

My notes (thanks to you) tell me to simplify first, turning 3/15 + 2/32 into 1/5 + 1/16 and then do the bowtie thingy :-)

@larryarmstrong6266

Жыл бұрын

I get 1/5 & 1/16 = 21/80 lol how did he get 2/5

21/80

480 is the LCD....?

you didn’t do 1 and 2 on the back

Why wouldn't you reduce that equation to its lowest form by beginning with 1 over five + 1 over 2?

5 over 47, that is the answer...

Yup 🤧

A

You talk way too much

Give me 2 real life examples this kind of equation would be needed! The result in real life is .2625 of whatever the fractions are of.

Ok but I fail to see how lcd is sooo important. 3/15=.2 and 2/32=.0625….so the 2 fractions equal. .2625 and everyone knows that .25 is 1/4 so that leaves .0125 which is equal to 1/80 and 1/4 of 80 is 20.

❤

Get to the point :) 5:50...

Why the hell do you waffle so much, get on with the problem.

Blab blab blab

First

For god sake get on with it!

Use a calculator, lol.

I like learning your way of teaching math, but please stop wasting 5:34 talking. Just do the math problem and talk after. I always have to fast forward at least 5 minutes because you just randomly talk. If you actually teach math I hope you don’t do this to your students.