Adding and Subtracting Significant Figures!
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- Опубліковано 8 вер 2024
- Lets do some sig fig math!! Once you know how to determine how many sig figs any given number has, it’s time to learn the rules for adding and subtracting significant figures!
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last one very very confusing.
It is the hardest example. Feel free to check out the last example in the addition and subtraction portion of this purple math link. www.purplemath.com/modules/rounding3.htm. The decimal point rule is a simplification of the overall rule, which states that in addition and subtraction sig figs, you are only as accurate as your least accurate place. In the last example 12,000 is only accurate up to the thousands place, so our answer can only give a number with sig figs up to the thousands place.
Dear Robin - Thank you for saving my ass when it comes to sig-figs. Signed, a grateful 46 year old who has returned to school and is being forced by the Devil/administration to take Chemistry.
Finally understand the last example. Thank you!
for the last example, both numbers are exact and neither has a decimal given. If you have an exact number like 12000 people and subtract 3500 people because they are some portion of that population not subject to some study, then you should have exactly 8500. Rounding in the thousands place seems wrong and non-intuitive. Are you sure you need to be doing this? Online sig-fig calcs also say the answer should be 8500.
you are a blessing! I was very confused and failed my first quiz, but did amazing on the unit test after reviewing!
Whatever number has the least significant "place" - what does this mean?
thank you
This helped me a lot 😘😘😘
I think the last answer should b 8000 or, because according to Five Rule in rounding off numbers..... If the first figure dropped is 5 and all the figures following 5 is zero of if there are no figures after the 5 thn the last figure should be unchanged if that last figure is even ...
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what if you add 106 and 4? Your answer is 110, so is the zero supposed to be significant? Should it be put in scientific notation?
awesome video mam
What would you do if there is addition and subtraction in one equation
It's still just the same one rule!
@@RobinReaction okay thank you
What do you mean least significant place?
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thank you so much. no one talked about the 0's
np!
In the last problem, what if it had been 14,000 - 3,500 = 10,500? Would the answer be 11,000 and why?
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IN BOTH veeery important Lead off with this yall makes ll the difference, sig figs IN BOTH
what about addition of 167000 + 23.00
I've never really seen the rule applied the way do for the last problem. The rule should only apply to numbers after the decimal point. I've put that problem into 4 different sig fig calculators and they all give the same answer of 8500. I don't think the makers of this video are correct,
Feel free to check out the last example in the addition and subtraction portion of this purple math link. www.purplemath.com/modules/rounding3.htm. The decimal point rule is a simplification of the overall rule, which states that in addition and subtraction sig figs, you are only as accurate as your least accurate place. In the last example 12,000 is only accurate up to the thousands place, so our answer can only give a number with sig figs up to the thousands place.
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What would 520+94.98 = ?
How do you do 1-.5
how's class goin'
keep it up
What would be the sig figs of 8.650 + 19.6 + 44.05 + 88 ?
2
160. and it may 160, not sure which would be right.
Addition and subtraction and multiplication rule are not applied in exact number
Isn’t the last one 8500
0.854-0.0592= has only 3 sig fig. you said it has 4 sig fig which is wrong. The answer is 0.795 they both have 3 sig. fig.
Habibrasol Safi if you listen to the video I actually say that one of the zeros is not a sig fig, and yep, like I said in the video they both have 3 sig figs and because of their location, 0.795 is the answer!
@@RobinReaction But students get confused the way explained.
Explaining addition and subtraction sig figs is often tricky so some people will definitely be confused when watching this video, but I’ve also taught this concept a lot of ways and found that there’s no perfect way to explain it to someone still learning about sig figs who hasn’t done practice problems yet. I definitely get what you’re saying, but I still feel this way of explaining is a good starter technique. Thanks for watching!
She should be saying more precise rather than more accurate. Significant figures have nothing to do with correctness but only the degree to which the measurments were taken.
Hi, I am not a statistic student, i m Sociologist but there in my book a question is given, please solve and send me, i will be thankful to you. my Email: shayansps@gmail.com
QUESTION . The grades in various subjects of a student are given below. Test at 5% level of significance that there is a significant difference in grades
Mathematics 72 80 83 75
Statistics 81 74 77 88
English 82 90 87 80
Research 74 71 77 70
Last one should 8,000 b/c 8 is even
Bilge Cagatay Correct. There is no better reason to round a 5 up than down, so fifty percent of the time it's rounded up and fifty percent down, which is determined by whether the proceeding number is even or odd.
no it should be exactly 8500 with 2 sig figs idk why she saying no to that
study hard
How about the sig fig in 2.871+0.758? Please help me out
I said the vedio is nice
hey bois
I'm so confused on the last one
It is the hardest one. Feel free to check out the last example in the addition and subtraction portion of this purple math link. www.purplemath.com/modules/rounding3.htm. The decimal point rule is a simplification of the overall rule, which states that in addition and subtraction sig figs, you are only as accurate as your least accurate place. In the last example 12,000 is only accurate up to the thousands place, so our answer can only give a number with sig figs up to the thousands place.
I don’t get the last one
I've never really seen the rule applied that way before. The rule should only apply to numbers after the decimal point. I've put that problem into 4 different sig fig calculators and they all give the same answer of 8500. I don't think the makers of this video are correct.
Feel free to check out the last example in the addition and subtraction portion of this purple math link. www.purplemath.com/modules/rounding3.htm. The decimal point rule is a simplification of the overall rule, which states that in addition and subtraction sig figs, you are only as accurate as your least accurate place. In the last example 12,000 is only accurate up to the thousands place, so our answer can only give a number with sig figs up to the thousands place.
I think she got the last one wrong because she was hitting a bong at the end ^--^
Beautiful Lady ❤️ with wonderful mind 😍
Simp
i understand it but the last one made no sense lol.
götten sallama bolum
pardon hocam haklıymışsın
I said nice the vedio