Integers
Tekst Storyboardowy
- I think so. I understand subtraction but not addition, multiplication, or division.
- Hi I have a problem. We learned about integers in school today but I have absolutely no idea what we learned and we have an exam tomorrow
- Alright, let's start by knowing that 0 is neither negative nor positive. Okay?
- Of course you don’t remember. Did you learn all operations?
- Sounds simple enough, what about multiplying and dividing?
- Alright
- For Eg -5 + -6-5 and -6 have the same sign, so the answer will be -11
- I will give you some key information and then help you with problems. When you are adding integers, if the numbers have the same signs then you keep that sign.
- So I know that you multiply normally, but I don’t know what to do with the signs.
- I think I do! Can we talk about multiplication and division now?
- In multiplication you multiply the numbers normally, but if they have the same signs the answer will be positive, and if they have different signs the answer is negative.
- Sure! What do you know so far?
- Yes! Multiplication seems pretty easy! What about division?
- YES. Okay, so tell me if I’m wrong: -7 x -8 = 56 and -7 x 8 = -56?
- Since you found multiplication simple, you’re in luck because division follows the exact same rules! Obviously you divide not multiply, but the rest is the same!
- Nope, you got it right!
- I think I’m ready, Thank you!
- Alright! Wait, before you leave, let me know if I'm good with division and addition too: -9 / 3 = -3 and -8 + -9 = -17?
- You are correct. Do you think you are ready for school tomorrow
- No problem !
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