I don't believe subtraction exists.

[@alceta1]

I always struggled with underyling concepts of math until university, where my previous learned-not-understood model broke apart and had to be rebuilt from the ground up. I'm confident that methods like these taught early on instead of the ever increasing set of new tools to solve specific questions would enable students to think differently about math. Your story is an excellent example of this. That was fun to watch, thanks!

[@kevinlordhayeses9468]

Awesome method for students to understand both addition, subtraction and negative numbers.

[@someonespadre]

In land surveying drafting an open circle is a dimension point, nothing there, black dot is a stake or rod point actually existing out there.

[@someonespadre]

By 9s complements (10 on the right most significant digit): 512039804 [phone] =277039899 (ignore the left most carry) Prior to electronic calculations the fastest type of mechanical calculator could only add, so for decades subtraction by adding complements was commonly employed for speed. There were a couple of methods implemented for interrupting the last carry or on the less expensive machines the operator simply knew to ignore the left most digit in the answer.

[@margaretware8267]

I'd love a video explaining why division does not exist. [Six divided by three is really six times one-third, and six divided by two-thirds is really six times three-halves]

[@mistyroses6563]

I just found your channel. I am 38, I sooo wish we had something like this back when I was learning math! I loved math in school and did well in it. But I know soo many people this would have helped. Now that I am older with some issues. This is soo much easier to understand and more fun. Thank you for teaching this way :)

[@seanwool]

My kids DEVOUR these videos, and I would say that they are a better judge than I am. I'm an adult in a STEM career. I don't have trouble with the concept of borrowing and place value. That may not have been the case when I was 7. That poses an interesting question. Who should be evaluating educational materials? Open a math textbook and take a look at the list of reviewers. It's a list of Dr. Name Smith, PhD University of Math State. When is the last time you have seen Name Smith, Student at Math Elementary School listed? I find myself looking at textbooks and appreciating them because I can "see what they are going for". That doesn't mean that they will be useful for my kids. If my kids look at some material and understand what they are supposed to understand when they are done with it, that is useful by definition. Mr. Tanton, start a review board consisting of nothing but the actual target audience for mathematics material. When you make millions doing it, all I ask is for a brand new Nissan Z in blue.

[@JamesTantonMath]

You are right ... I should have a go at creating an independent review board of mathematics materials, with all Board and Advisory Council members and such being the fabulous kiddos. If there is an income to be had of that, I'll make sure all are properly rewarded for their efforts and generosity, along with Nissan Z's for all who desire them, blue and otherwise.

[@SimonTiger]

Small part of the video just disappeared: 13:01 - 13:14

[@tasnimmahfuznafis8892]

Thanks for this wonderful work. By the way, do you believe in division?

[@MegaSquiff]

James, I’ve taken to “liking” your videos before I even watch them. You really are quite unique! Thanks as always.

[@chocolateangel8743]

@MegaSquiff I know, right. He doesn't teach/think like your average math educator.

[@SimonTiger]

6:37 Actually...in the very early universe, there was lots of matter AND antimatter! There was just ever so slightly more matter, so in a few minutes all the antimatter has annihilated with most of the matter.

[@fzndn-xvii]

The pile and hole reminds me of the movie Stand and Deliver

[@rpchristo]

esto me recuerda al Mini Computador Pappy, Saludos de Chile

[@chocolateangel8743]

When you use negitive numbers to solve a subtraction problem -- instead of borrowing -- they call it the Partial Differences method.

[@kennyg1358]

The master of mirror image.

[@2bratsmom]

James, wish you had given credit where it is due otherwise you know what it is called - plagiarism! This is the subtraction method used in Vedic Math by Mathematicians since 500 BC. It is great that you’re bringing these methods to one and all in an accessible way but you have been long enough in scientific community/ academia to give credit where it is due! Hope you do that from now on. Never too late to start. Befits you. Good luck.

[@homoyoutubus]

He may have come up with it independently. I did and taught my kids this despite society 5 years ago. I never knew the history.

[@elierreyes9287]

Perhaps he didn’t know! SOmetimes is better to give people the benefit of the doubt and besides. vedics is pretty famous on itself; even political parties like it!! Hope you do that from now on. Never too late to start. Cheerio!