Significant Figures Made Easy! (1.2)

Introduction to significant figures. Discusses basics of multiplication and division.

Category:

Education

Tags:

• chemistry
• physics
• math
• rounding
• accuracy
• precision

[YesItsMeh1992]

What If it is a fraction and I want to convert it to a decimal number , for example 1 over 13 ( 1/13) Should I round it up to 1 significant zero ? my book says 2 significant zeros :S

[tdewitt451]

@YesItsMeh1992 good question. the important thing is to do what your book or teacher wants. but technically, if you're converting a fraction to a decimal, you don't have to do any rounding, so your answer can have as many sig figs as you want. so i guess the book says 2 sig figs to make it simple, but really it could be 5 or 6, or however many you want. but ask your teacher and do what they want, so you don't lose points.

[baggedyman]

So 5 x 5 = 30?

[tdewitt451]

@baggedyman believe it or not, yes that's true IF YOU'RE SUPPOSED TO BE USING SIGNIFICANT FIGURES TO ROUND. that's the important thing. you use significant figures to round whenever the numbers you're working with are measurements, like 34.2 grams or 74.5 feet. you measure a lot in science; that's why you use sig figs in science. so if someone asks what's 5 times 5, obviously the answer is 25. but if someone asks what's 5 grams times 5 grams, the sig fig rounded answer would be 30. make sense?

[Msmmyeahmm]

THANKSSS

I CANT FIND THE NEXT PART D:

I HAVE A TEST TOM!!!

[tdewitt451]

@Msmmyeahmm it's called "significant figures and zeros (1.3)". search that or just go to my channel page.

[drgon41094]

Thank you for making these videos!!!!!! My teacher goes wayy to fast during her lessons so i was really lost. Your vids helped out alot! :D

[MrCitsidas]

Thank you sooo much, these vids literally save my ass!!

[mosaviadel]

Great teaching' you made it so easy

Thanks

[vaironxxrd]

Great, my teacher inst good explaining. But I'm lucky you are!

[Allison0776]

Thank You!!! You are my go to guy this semester!!! "I understand!!!" :)

[nyacoub11]

thank you so much :d you did it better than my teacher did

[GuitarFuff]

I wish my teacher wasn't so shit. Thankyou so much!

[Jootyartimes]

i love u man am not gay btw :P

[Snowball636]

OHMYGOSH!! THIS IS SO USEFUL I GET IT NOW!! :D IM SO HAPPY THANKS SO MUCH!!! :D YOU SHUD BE MY MATHS TEACHER!

[Nintendogsfreak11]

I've always had a hard time learning how to do stuff in books, or by reading. I find it easier when you have an actual person show you. Because books don't always answer all your questions, and i also get lost in which order to do it.