Cross multiplying proportions is a straightforward process that is the same as cross multiplying fractions. Cross multiply by multiplying a numerator by the other side’s denominator with help from a math teacher in this free video on proportions in math.
Expert: Jimmy Chang
Bio: Jimmy Chang has been a math teacher at St. Pete College for nearly a decade. He has a master’s degree in math, and his specialties include calculus, algebra, liberal arts, math and trigonometry.
Filmmaker: Christopher Rokosz
Thanks jimmy
boy has this channel degraded. from teaching math, a useful skill, to teaching DIY BS
This is very helpful thank you
Thank you so much 🥰
it was helpful tho ty
i mean im only 11 and im learning this
im on my moms account and im 11 im learning this
i stared at the sums for hours and after seeing this i feel like so dumb
The problem with this is that it's learning by rote. The memorisation of tricks. Classic education, which people don't remember over the years.
You needed to show why the trick works.
I’m 21 and I just barely graduated at 18. I might as well had crawled across the stage, and it took a lot of virtual classes and cheating to get there. After a 3 year break and some maturing, ive suddenly acquired a will to learn math again. My problem was going straight to algebra when there’s a few foundation math topics I never solidified. I’m now interested in going into the science field, which obviously required an extensive amount of math knowledge, and these videos are a huge help. Thankyou for creating this, and anybody whose reading, it doesn’t matter how bad you think you are you can do it too. But it takes your own free will to want it, not any outside pressures forcing you. Good luck to anyone who needed to search this video up.
ok so i zoned out during the part where i cross multiply 3 frafctions and im screwed help
Thanks so much the video helped so much
Nice work. Here is an alternative way to cross multiplication. https://youtube.com/watch?v=UF2OoLLLYGU&feature=share
I learned this on grade 3
A whole 45 minute math class couldn’t teach me this yet a 2 min tutorial can 💃🏼🕺🏻
Why divided by 4?
I’m in 6th grade taking this it’s so hard 😭
thanks jimmy
thanks so much i have a math test and freaking out cuz had no idea how to do it… wow college im learning this in yea five.
7th grade anyone?
💀💀 college math? sir i’m in 6th grade and my teacher just started doing this crap.
My college math teacher literally linked this video in her lectures this quarter while everybody in the comments sayin that they're learning it in fuckin MIDDLE SCHOOL.. Never thought I'd feel old asf at 22