Rethink Subtraction as Adding a Negative Number - [7-1-5]

In this lesson, we will explore the operation of subtraction and rethink the concept of subtraction as the addition of a negative number. When we subtract numbers, we move left along the number line. Another way of thinking about subtraction is to add a negative number. Adding a negative is the same thing as adding a debt. Debt represents what we owe someone else - so adding debt is the same as subtracting from what we already have. Adding a negative number is the same as subtraction, and this will be very helpful when we subtract and add integers.

[rociodelahoya]

OMG I am 52 yrs old and decided to go back to school. I have been trying to figure this ISH OUT..LOL but could not. I ran into this man and ge laid it out in ADULT TERMS... DEBT. LOL. I CLEARLY UNDERSTAND. WOW. GOD BLESS HIM. THANK YOU SIR

[heidiwellstead]

Thank you for your video. Your method of teaching really works for me.

[angelicaledesma]

Thank you for your videos. It has helped my son and while reviewing for an upcoming exam.

[jjjjjjjjjjjjjjjjjjjjjjjjjjjjj]

This man has never-ending white boards 😂

[RubyDehad]

How if small number minus bigger number Ex : 4-7 or -4 -9 = ??
Pls make video explaination about this subtraction.

[ssrkchaudhary]

Sir, I have a doubt. Why is " 0! = 1 " ? Please try to clear my doubt. I hope you will try to reply as soon as possible. I expect a quick response from you.

[cesarroldan]

Great tutorial method. God bless you sir.

[annmariekennedy]

Hope I meant to say thanks your a blessing

[epicplayz]

Wait in grade 6 and I’m doing this book about year 5-6 maths and for some reason it shows subtracting positive and negative numbers. And I look in the thin you said and it shows year 7 .huh, . BUT thank you so much for this lesson. I fully understand the topic of what you were saying.

[parkavenue]

This is both a confusing and highly important subject. It has been really hard to learn but your video step-by-step along with phrases and explanations along with all the examples altogether little by little clarified the concept/s. How do I thank you? I wasn't sure at all I could ever understand and I am so elated to understand!!! Thank you, I am very, very grateful!!! Best of luck in your endeavors!

[annmariekennedy]

And you even got me into the first one with hundred marks In all my grades and now I hoy to go to manning school

[anthonymurphy]

substracting neg numbers seems like liberal math concept all of sudden your negative in debt its being taken away!!!

[edithportillo]

Thank you thank you. Know I undesrtand Perfectly 😊

[iyobs]

How do you explain 6 - - 4= ? Subtracting two negatives

[abdallaalali]

Great work, you make things easier thanks alot

[venkatasomu]

thank you very much sir, now I am so clear in subtraction

[nolifekng]

Once again just clicking click click! Thanks Mr Math teacher! Keep up the amazin work! Just wow 🤯👍

[hemarajue]

Addition is easy compared subtraction on the number line.
e.g John walks a distance of 5km from his home in his morning walk. While returning home, he walks a distance of 3km and take rest. How far is John away from his home and what is the total distance he walked?
Ans: 5-3=5+(-3)=2.
5+3=8.

[danieljmarvin]

I think this could be a lot clearer. I would say something like if we start with any number "a", If we say let "a" + "b" = 0, we can rename "b" in terms of "a" to emphasize their relationship. So, "-a" = "b". In conclusion "a" + "-a" = 0, thus we can found the Set Z, the "negative numbers". But, in truth, subtraction itself is an abstraction of looking at the the addition of positive and negative numbers. In fact, one could go as far and say that subtraction doesn't really even exist. That is why inventing a new rule in number theory instead of just relying a more simple version that gets the job done, confuses a lot of people. Thinking of subtraction in terms of addition is much more simple and more in line with our real world experience.

[toserveman]

Seems like a longer way to come up with a sum or minuend 🤔. Reminds me of Common Core.