GCSE Maths AQA November 2018 Paper 3 Higher Tier Walkthrough

[@MrTompkins]

I release new papers to members first - tap JOIN for details: kzbin.infojoin Need a tutor? mr.tompkins.online/tutors Get all your AQA past papers, mark schemes and video walkthroughs in one handy place! - mr.tompkins.online/aqa Timestamps for mobile users: 0:00:00 - Intro 0:01:45 - Q 1 - Translations with Column Vectors 0:02:34 - Q 2 - Metric unit conversion with expressing one number as a fraction of another 0:03:41 - Q 3 - Find the nth term of a linear sequence 0:04:54 - Q 4 - Lowest Common Multiples 0:05:17 - Q 5 - Error Intervals 0:06:23 - Q 6 - Interpreting a Time series graph 0:11:00 - Q 7 - Proofs 0:15:26 - Q 8 - Compound interest 0:17:35 - Q 9 - Perimeter of compound shapes (circle and rectangle) 0:22:37 - Q10 - Solving linear inequalities 0:23:50 - Q11 - Trigonometry in right angled triangles 0:25:28 - Q12 - Plotting cubic equations 0:26:15 - Q13 - Probability and expectation 0:27:38 - Q14 - Mean Average 0:29:50 - Q15 - Surface areas of pyramids and cylinders 0:38:53 - Q16 - Dependant Probability 0:42:18 - Q17 - Indices 0:43:05 - Q18 - Histograms 0:46:52 - Q19 - Limits of Accuracy 0:50:02 - Q20 - Transformation of curves 0:52:55 - Q21 - Speed distance time 1:00:29 - Q22 - Iterative formula 1:06:09 - Q23 - Similar triangles with Pythagoras theorem 1:10:30 - Q24 - Volumes of spheres and cones with ratio 1:17:06 - Q25 - Transformaions - Invariant points after reflection 1:18:29 - Q26 - Function notation - Inverse functions 1:21:10 - Advertisement Break! Topic Tests 1:21:52 - Q27 -Coordinate geometry - Intersection of circle and straight line 1:31:18 - Advertisement Break! Patreon 1:31:45 - Q28 - Properties of a parabola 1:31:52 - Outro

[@mollieb9605]

You are amazing! Going through past papers as we have many maths exams upcoming due to needing evidence this year as exams are not taking place and this is so helpful, thank you so much! Please do more :)

[@MrTompkins]

Hey Mollie - glad you have found these so helpful! If you are looking for more, I do have 4 more papers you might find useful in the members only section ;-)

[@mollieb9605]

@@MrTompkins fab I’ll have a look, thank you :) you’re fantastic !!

[@MrTompkins]

Aw, thanks Mollie B! =)

[@wsxhyp]

You are carrying my exams sir 🙏 I love you so much you’re literally the reason I’m going to pass gcse maths

[@MrTompkins]

Keep working hard! You are going to do great =)

[@xkhanz777]

I don’t think you understand how much you have helped out GCSE students. 😂

[@MrTompkins]

I'm happy if I've helped just one person! Good luck with your assessments zKhanz 777 =)

[@moayadgriwi3450]

you have a mistake in question 25, where you said B and C point and you circled the points B and D. Thanks

[@MrTompkins]

Oops - yup, I say the right thing but circle the wrong thing! It should be B and C.

[@king0vdarkness]

1:29:18 How could you factorise if you didn't know x=2 (other than the quadratic equation)?

[@MrTompkins]

If I didnt know one solution was 2, I would have just considered all the factor pairs of 26 until I found a pair that fit.

[@THE_LAST_STYLEBENDER]

sir at the end of question 24 if the question said the radius is x then would the ratio have been radius:perpendicular height 9:32? Great video thanks

[@MrTompkins]

I’d need to rework the whole problem to check! Hmm, if I find 5 minutes and a bit of paper I might give it a try. Why did you want to know?

[@THE_LAST_STYLEBENDER]

@@MrTompkins nah nevermind i was just wondering as why x would equal the numerator when if u cross multiplied it will equal the denominator

[@THE_LAST_STYLEBENDER]

@@MrTompkins i think i just worded my question horribley. Thankls for replying anyways

[@spectre9717]

This was the hardest test only got 68.75% this is the worst score Ive ever had on a higher paper lost most of my points through Q23-26 at least now I can improve on what Ive done wrong but this test was time consuming took me an extra 20 minutes to finish

[@MrTompkins]

Try to work through more past papers! The more you do, the fewer surprises you will get on the day. =)

[@anasmezouar4678]

for question 15 how come when calculating the surface are of lampshade A you didn't include the areas of the circles

[@anasmezouar4678]

never mind sorry i just read back the question

[@MrTompkins]

@@anasmezouar4678 yup, or just look at a lampshade, and you'll see why! XD

[@abdurrahmanzafar112]

Could please explain q24 and q23 mr edtech becuz I’m still a little confused

[@MrTompkins]

How far did you get before you got confused?

[@abdurrahmanzafar112]

I don’t understand q24 at all and q23 I don’t understand why you multiply by 3/2

[@idnsmsndhejshs800]

for question 21 whenever i type in 6x 1 1/3 on my calculator (obviously not like that i just don’t have a fraction button on phone keyboard) it gives me 2 not 8

[@MrTompkins]

Hey idnsmsn dhekshs -if you have the same calculator as I'm using here, try using the mixed fraction button, which you can pull up by tapping the shift button before the fraction key. This will give you 3 boxes to enter your whole number, numerator and denominator. Alternatively, if you are using your phone try converting 1 1/3 first to a top heavy fraction 4/3 and you can then just type in 6 x 4 / 3 and it should give the right answer.

[@sz7432]

question 23, how is it a ratio of 3 to 2

[@MrTompkins]

It comes from the fact that the strut is a third of the way up the ladder. The distance from the tip to the strut is 2/3rd. The distance from the tip to the floor is 3/3rds. So the ratio of the smaller triangle to the bigger one is 2/3rds to 3/3rds, or 2 : 3.

[@sushiisushi6701]

question 24 doesn't make much sense :(

[@MrTompkins]

This is quite a tough question, which requires good knowledge of both mensuration and algebraic fractions. If you are struggling to follow it, try revising these two topics first.

[@Azeem8166]

For question 23 why did u multiply 48 by 3/2 , i didn't understand that part

[@MrTompkins]

Did you understand that the 2 triangles were in the ratio of 2:3? We are basically coming up with an equivalent ratio of 2:3 which is 48:”something”. You can find the “something” by dividing 48 by 2 and multiplying by 3

[@ToonOfLancing]

Q25 - oops on circling the wrong answer.

[@MrTompkins]

Doh! That's why I shouldn't edit videos late at night!

[@MrTompkins]

I've added an info card to that point in the video pointing out the error. I do clearly say the correct answer, so hopefully that will suffice (if you dont find any more mistakes!). Thanks for pointing it out!

[@gdawg735]

Hey I have my maths test tommorow so it would really help if u answered fast pleaseeeee. For question 9 why is the answer 71 and not 70. You can’t make an extra 0.5 laps. Please clarify

[@MrTompkins]

The question states that the race has to be greater than 305km. 70 laps wouldn’t be quite long enough. Good luck for tomorrow! 🍀

[@gdawg735]

Mr Tompkins EdTech ohhhh. Thank you 😊

[@kubakakauko]

I think you got a wrong anser for Q 13. Its asks you about Tails (0.4) so 500 * 0.4 = 200

[@MrTompkins]

Hey - I did work out the number of outcomes for heads first, which gave me 300, but then realised that it was tails they were after so switched my final answer to 500 - 300 = 200. I could have also used 0,4 as you did, and got there a bit quicker! So my advice - always read the question!

[@kubakakauko]

@@MrTompkins I totally love your videos by the way !!! They are unbelievably helpful. I wish I knew about your channel when I did my GCSE exam for the first time :D Stay safe, Good luck and keep doing what you're doing because it's amazing.

[@MrTompkins]

@@kubakakauko thanks! I've not made too many maths videos over the last few months, because apart from your good self, noone else seems to be watching them. I'm hopeful things will pick up a bit towards November when they are planning to do the resits. Is that what you are prepping for, or are you just here for the love of maths? Really glad to hear you are enjoying these.

[@kubakakauko]

@@MrTompkins I'm sure things will get better and more people will watch the amazing material on your channel in the upcoming weeks. I think its all because of this coronavirus situation. GCSE's are cancelled and students will receive predicted grades, therefore, they think no revision needs to be done. However I myself want to make sure that if I don't get the desired grade I will be ready for sitting the exam in October and that's partially what I'm prepping for. I'm also trying to get a better understanding of mathematics since only now I see how important it is.

[@MrTompkins]

Ah - a very wise strategy! I have told my own year 11 students the same thing, but most just went into holiday mode as soon as the exams were cancelled. Have you thought about A level maths? Most colleges are also offering core maths, which a lot of sixthformers are taking if they are doing numerate A levels, but not wanting to do the full A level course in maths. I've been teaching it this year, and it's actually really useful.

[@rafiauddin8514]

Question 23, why would you divide it by 2??

[@MrTompkins]

Hey Rafia - I'm not really dividing by 2. I'm actually multiplying through by 3/2 as ratio of the smaller triangle to the larger one is 3:2. So the "dividing by 2" is just part of this scaler - its multiply by three AND THEN divide by 2. Does that make sense?

[@adh_yt2472]

Why is 9) a 1/3

[@MrTompkins]

Are you sure you are asking about the right question? Q9 has an answer of 71 laps!

[@kadivkida]

thanks.

[@MrTompkins]

Most welcome!