Advanced tips on using the Casio FX-991EX Classwiz for GCSE Maths

[@MathinarUK]

Timestamps 0:00 Intro 0:56 Feature 1 - Table Mode 3:23 Feature 2 - Simultaneous Equations 5:05 Feature 3 - Quadratic Inequalities 7:00 Feature 4 - Solving Quadratics 9:33 Feature 5 - Factorising Quadratics 11:25 Feature 6 - Averages 14:42 Feature 7 - Calculations with Time 16:58 Feature 8 - Mixed and Improper Fractions 18:48 Feature 9 - Converting Units 24:29 Feature 10 - Random Number Generator

[@YHuss81]

I didn't know I could've pay to win on GCSEs 😂😂

[@MathinarUK]

Lol. It’s pay to win or road to glory. You decide

[@harrisonlee4408]

Thank you I brought this calculator and it’s soo useful and so much better for GCSE

[@iqraamahmed6874]

Thanks for the run through on how to use the functions it helps

[@iaminsideyourwall5243]

Thank you for the helpful video

[@johanmapping]

Thanks for the video! I have my year 9 end of year exam for maths calc on friday and this looks really useful! Thank you, you earnt a sub

[@MathinarUK]

Thank you, I hope the exam went well and you are ready for GCSE

[@nagyelraheb4165]

Thank you for your effort that was really useful

[@omarhasan6573]

Thank you so much.

[@gazalaahmed8070]

Thank you so much for sharing this video.

[@MathinarUK]

It's my pleasure

[@tg.tyrant2302_]

The conversions one is a godsend

[@AxmadMC]

I found this video helpful, incredible. Thanks alot!

[@MathinarUK]

You're welcome!

[@user-xh5cb4tc8t]

tysm

[@alanfaubel6913]

Would you also recommend this for the Foundation papers?

[@safwataldajani7115]

Hey Mathinar, when I press the MENU/SETUP button I only get the first 3 modes, I've tried reset then setup data, it didn't work, what else should I do???

[@Xlr8t]

you may potentially have the wrong calculator.

[@AxmadMC]

Is this calculator permitted in International pearson Edexcel GCSE exam? Kindly reply, I was really confused!

[@MathinarUK]

Yes it is allowed

[@evanrieux668]

I bought it for my ap bio exam, well wish me luck next week because canadian universities only accept a level 4 and my test is on mat 10th

[@MathinarUK]

Good Luck

[@evanrieux668]

Yeah well know I just have to wait until July to get my results back wrote it yesterday

[@noya4237]

@@evanrieux668 how was it??

[@evanrieux668]

@noya4237 got a 3 on it, don't remember much about it but they did release the written questions for last year's one, I don't know if they released the multiple choice, actually considering may is almost over if they happened around the same as last years then there is a chance the written exam might be released for this year already since mine was on May 12th or somewhere around that, but the calculator works well

[@davidmerino8292]

I will pray to god for you to be in good health Thank you very much

[@MathinarUK]

Thank you too

[@milbertpatun-og6606]

how will i computer for F? example in 991ES i can simply do this: X + F = 0 , F Shift Solve X=0 SOLVE FOR F?

[@glynhall2858]

but my teacher asks i have to show what im typing into the calculator to show to workings out but with this im just putting in the question and getting the anwser straight away, would i still get full marks on the question on the wjec gcse board

[@SwiftNinja69swithwaifus]

no you still need to show sufficient workings, but this method can be used to check your answer or help you if you don't know how to approach the question.

[@MathinarUK]

Technically, correct answer means full marks for 95% of questions. Even without working out. However if you made a typo putting the numbers into your calculator, this will result in zero marks without working out. So you use this to check that your answer is correct rather than rely on this to work out your answers

[@DMMINO493]

What questions would the random number generator be used for?

[@rixddeai5064]

no questions use it, its just a for fun option imo, like u go to google and do the RNG too its the same

[@floydbethel2941]

curious on feature 7 when i press 2.4 degrees i get back 2.4.

[@floydbethel2941]

nevermind i was in the wrong input(2) instead of input (1)

[@HappyHogan-ed5kn]

They don’t sell this anymore 😭 I have the cg50, any tips(idk how to use it )

[@shadowq5040]

PLEASE RESPOND GCSE TOMMOROW!! : Can you do quadratic simulataneous equations on the fx-991Ex

[@MathinarUK]

You can’t just type in a quadratic simultaneous equation and get it to produce an answer. You need to substitute the linear equation into the quadratic and use the calculator to solve the quadratic equation.

[@johanmapping]

Good luck!

[@kurkureholland6227]

Hi is this still the best calculator to buy for GCSEs?

[@MathinarUK]

Yes. Still the best calculator by miles

[@tk006]

Hope they don't ban the calculator. I'm doing my GCSE's next year🤞🏾

[@MathinarUK]

You'll be okay, if they were going to ban it next year, they would have announced it already

[@donk7001]

how was the first gsce?

[@tk006]

@@donk7001 Hi it was okay I remember paper 4 being the better one.

[@neenzontop]

if i could give u a hug i would

[@michaelturner4457]

I watch this video when I can't sleep.

[@MuhammadAhmad-oq6bc]

Is this calculator allowed in O level math(0580) exam?

[@jamesduke151]

o levels still exist? lmao

[@_.x3no._]

@@jamesduke151 innit he might not be from the UK mate 😂

[@yatsu4683]

Man said O level ;.;

[@tg.tyrant2302_]

What is this? Back to the Future?

[@Countdown420]

Got my exams today!

[@Countdown420]

nvmits non cakculator

[@MathinarUK]

I know. Best of luck. Watch this video after your exam

[@rcboys6939]

there is a new one fx991cw but has sligtly different table

[@vanishbegone]

is the minimum point the turning point?

[@felixlord2430]

The minimum point is the turning point of an x^2 graph (the maximum point is the turning point of a -x^2 graph)

[@hayam1956]

watching this the day before my exam #gcse2022

[@MathinarUK]

I hope it helped you in Paper 2

[@itz_cjtv1019]

Its not cheating, it's just legally exploiting 😂

[@islamic365teach]

Well you should know must questions require you to show your working or you won't receive the full Marks

[@user-hb2ws3pd2r]

Hi, I have my GCSE exam tomorrow and it'd be great if you could answer this If the question is a high mark question (3/4/5/6) and it doesn't specify whether or not you have to show your working, will you get full marks if you show no working but get the correct answer? AQA Maths btw

[@MathinarUK]

The truth is yes. Correct answer = full marks Unless a question specifically states to show your working out

[@user-hb2ws3pd2r]

@@MathinarUK Thank you!

[@Blacksmith1959]

The exam should be on how well you can use the functions on your calculator.

[@MathinarUK]

It already is. Those who know how to use the calculator well have a massive advantage on those who don’t

[@Blacksmith1959]

@@MathinarUK I'm from an era where it was pen, paper and ability to solve. These questions are so easy you shouldn't need a calculator.

[@jamaljanquavius9980]

​@@Blacksmith1959 well the era has changed bruh💀

[@hasoonnine]

Why does youtube recommend this video to me right after my exam smh

[@sazinaprajapati4034]

hey can you help me

[@etch4]

18:08 Don't do that. Amateur style. First 2 then shift proper fraction then 3 then cursor down then 5.

[@99xs]

Bro this calculator is acc cheating lmao

[@MathinarUK]

I like to call it the legal way to cheat

[@_.x3no._]

@@MathinarUK lovely stuff