Thank you for your comment Mary-Kate. In most of my videos there is a symbol in the top right corner denoting a calculator for calculator based questions and a calculator crossed out for none calculator based questions. So as you can see these are calculator based questions.
Thanks for your comment it is nice to get feedback and for people to spot my errors ;), not easy holding it all together without making a mistake here and there. You are totally correct should be 35.55 think I had it in the working just didn't write it in the answer line. I even go on to use the correct value in the next part of the question, strange I didn't spot that :)
When you're working out for upper bounds results, why do you divide by a lower bound and not two upper bounds? I am thinking to yield a bigger result using a smaller number when dividing? Also, how do you know when to use a upper and a lower bound when doing the formula since the question didn't say at all apart from calculate the lower bound.
+空を変更します! Did you check out the recap of the basics video, that explains why you need to use which boundaries. But in general when subtracting and dividing you need to use opposites to get the maximum and minimum values if you are not sure try all the combinations and see which ones give the largest and smallest numbers.
I see. I done a mini experiment testing the yield of each bound division and I understand now. In the exam, is it viable to test out different bound division for the final result to secure full marks for the correct answer? Thanks!
Thank you very much, finally a teacher in a youtube video that goes at the actual hard question that really come up in the exam. Much appreciated.
Thank you for your comment Mary-Kate. In most of my videos there is a symbol in the top right corner denoting a calculator for calculator based questions and a calculator crossed out for none calculator based questions. So as you can see these are calculator based questions.
In the 3rd one the radius is rounded to nearest mm
So shouldn't we convert 6.2 cm into mm first?
these are so useful! thank you! just one question, at 7:52, why is the answer for lower bound 35.6 35.5 and not 35.55?
Thanks for your comment it is nice to get feedback and for people to spot my errors ;), not easy holding it all together without making a mistake here and there. You are totally correct should be 35.55 think I had it in the working just didn't write it in the answer line. I even go on to use the correct value in the next part of the question, strange I didn't spot that :)
RawMaths ah okay haha no problem!
In the last question is it possible that you give the answer of m as 0.23 as it would be the same for the max and min values
I think it would be best to get it is accurate as possible so what he did was better and will get you the mark.
Yes Momina, that is right.
Okii Thanks ☺️😊
Would this be on calculator or non calculator
I don't understand the significant places like for example 27.6 to 3 s.f and 23.4 to 1 s.f. I don't understand them
maybe this will help ua-cam.com/video/-Ok4eHbIYKQ/v-deo.html
It may be too late but here's a different guy explains it well:ua-cam.com/video/_UsB0vbnlMQ/v-deo.html
Are there any kind keyy things you need to know when doing Upper and Lower bounds?
obviously the maths is the same but are these lessons viable for gcse 2019 with the new spec
yh maths is maths in the end of the day
When you're working out for upper bounds results, why do you divide by a lower bound and not two upper bounds? I am thinking to yield a bigger result using a smaller number when dividing?
Also, how do you know when to use a upper and a lower bound when doing the formula since the question didn't say at all apart from calculate the lower bound.
+空を変更します! Did you check out the recap of the basics video, that explains why you need to use which boundaries. But in general when subtracting and dividing you need to use opposites to get the maximum and minimum values if you are not sure try all the combinations and see which ones give the largest and smallest numbers.
I see. I done a mini experiment testing the yield of each bound division and I understand now. In the exam, is it viable to test out different bound division for the final result to secure full marks for the correct answer?
Thanks!
Saw the summary video and I fully understand it. Thanks :)
;)
That was quite of a late reply! Anyways, I did the maths exam and I may get an A*.
there is a mistake on the 3rd question, you need to convert the 6.2cm to mm before you can work the upper and lower bound. Sorry for interruption
Very helpful! Helped me get the last question on this paper.
How do you get that calculator?
you need to buy it off amazon.
It’s called a scientific calculator
Very clear - got all that - Thank you very much.
Excellent video thanks
Very helpful. Thanks. ☺
this is so helpful!!
hi
i put the right values for the second question but my answer was different to yours
my answer was 5.10 to 2 d.p
Thank u soooooo much
Amazing
tnx for the help
veeeery helpful
Love🤗
This is so confusing
He need some milk
😂dickhead