My sharp calculator isn't giving me the correct answers, I'm really worried because it will give me the wrong answers in my physics exam tomorrow!
for example-
99x2x10^9 = 1.98x10^9
but my calculator gives 1.98 x 10^12
HELP
x
Turn on thread page Beta
-
CresentHan
- Follow
- 0 followers
- 12 badges
- Send a private message to CresentHan
- Thread Starter
Offline12ReputationRep:- Follow
- 1
- 18-06-2016 16:18
-
- Follow
- 2
- 18-06-2016 16:25
(Original post by CresentHan)
My sharp calculator isn't giving me the correct answers, I'm really worried because it will give me the wrong answers in my physics exam tomorrow!
for example-
99x2x10^9 = 1.98x10^9
but my calculator gives 1.98 x 10^12
HELP
198 x 10^9 isn't in standard form.
You need to convert 198 into 1.98
You do that by dividing by 10 twice.
So then it becomes 1.98 x 10^11
NOT 1.98 x 10^12Last edited by Federerr; 18-06-2016 at 16:30. -
CresentHan
- Follow
- 0 followers
- 12 badges
- Send a private message to CresentHan
- Thread Starter
Offline12ReputationRep:- Follow
- 3
- 18-06-2016 16:28
(Original post by Federerr)
99x2 = 198
198 x 10^9 isn't in standard form.
You need to convert 198 into 1.98
You do that by dividing by 10 twice.
So then it becomes 1.98 x 10^11
NOT 1.98 x 10^12
My calculator isn't giving me that answer -
- Follow
- 4
- 18-06-2016 16:32
(Original post by CresentHan)
The mark scheme answer is 1.98 x 10^9
My calculator isn't giving me that answer
to convert:
198 x 10^11 into 1.98 x 10^9
You divide 198 by 10 twice.
So instead of adding to the power you take way.
So not 1.98 x 10^12
Its 1.98 x 10^9 -
PharaohFromSpace
- Follow
- 9 followers
- 3 badges
- Send a private message to PharaohFromSpace
Offline3ReputationRep:- Follow
- 5
- 18-06-2016 16:33
(Original post by CresentHan)
My sharp calculator isn't giving me the correct answers, I'm really worried because it will give me the wrong answers in my physics exam tomorrow!
for example-
99x2x10^9 = 1.98x10^9
but my calculator gives 1.98 x 10^12
HELP
Sure you're using the right numbers? -
CresentHan
- Follow
- 0 followers
- 12 badges
- Send a private message to CresentHan
- Thread Starter
Offline12ReputationRep:- Follow
- 6
- 18-06-2016 16:35
(Original post by PharaohFromSpace)
99x2x10^9=1.98 x 10^11 so I don't know what you're on about.....
Sure you're using the right numbers?
I'm just as stuck as you! x -
sulaimanali
- Follow
- 24 followers
- 20 badges
- Send a private message to sulaimanali
Offline20ReputationRep:- Follow
- 7
- 18-06-2016 16:35
make sure it's on degrees mode and not radians or anything.
-
CresentHan
- Follow
- 0 followers
- 12 badges
- Send a private message to CresentHan
- Thread Starter
Offline12ReputationRep:- Follow
- 8
- 18-06-2016 16:35
(Original post by Federerr)
Oh shoot sorry!
to convert:
198 x 10^11 into 1.98 x 10^9
You divide 198 by 10 twice.
So instead of adding to the power you take way.
So not 1.98 x 10^12
Its 1.98 x 10^9 -
CresentHan
- Follow
- 0 followers
- 12 badges
- Send a private message to CresentHan
- Thread Starter
Offline12ReputationRep:- Follow
- 9
- 18-06-2016 16:36
(Original post by sulaimanali)
make sure it's on degrees mode and not radians or anything. -
- Follow
- 10
- 18-06-2016 16:39
(Original post by CresentHan)
My sharp calculator isn't giving me the correct answers, I'm really worried because it will give me the wrong answers in my physics exam tomorrow!
for example-
99x2x10^9 = 1.98x10^9
but my calculator gives 1.98 x 10^12
HELP
Post a picture of your calculator display and the markscheme.
Try resetting the calculator by going into mode - clear or w/e it is in your calculator. -
TheDragonGuy
- Follow
- 4 followers
- 8 badges
- Send a private message to TheDragonGuy
Offline8ReputationRep:- Follow
- 11
- 18-06-2016 16:40
2x99=198
198x10^9=1.98x10^11
So you've given us the wrong numbers somewhere. -
CresentHan
- Follow
- 0 followers
- 12 badges
- Send a private message to CresentHan
- Thread Starter
Offline12ReputationRep:- Follow
- 12
- 18-06-2016 16:44
Output power = 99% × 2 ×10^9= 1.98 × 10^9 (W)
This is what the markscheme says -
TheDragonGuy
- Follow
- 4 followers
- 8 badges
- Send a private message to TheDragonGuy
Offline8ReputationRep:- Follow
- 13
- 18-06-2016 16:46
(Original post by CresentHan)
Output power = 99% × 2 ×10^9= 1.98 × 10^9 (W)
This is what the markscheme says -
CheeseIsVeg
- Follow
- 388 followers
- 22 badges
- Send a private message to CheeseIsVeg
- Community Assistant
Offline22ReputationRep:Community Assistant- Follow
- 14
- 18-06-2016 16:50
Turn it on and off again
Take battery out and put back in again
Deffo check rad/deg mode is correct and that there are no odd modes onSpoiler:ShowThen and only then resort to hitting it XD
#lifehacks -
- Follow
- 15
- 18-06-2016 16:59
There's nothing wrong with your calculator, Cresent! You should've told us it was 99% and not 99 at the start.
99% is 99/100, which is 0.99; not 99. -
CresentHan
- Follow
- 0 followers
- 12 badges
- Send a private message to CresentHan
- Thread Starter
Offline12ReputationRep:- Follow
- 16
- 18-06-2016 19:01
(Original post by Drackore)
There's nothing wrong with your calculator, Cresent! You should've told us it was 99% and not 99 at the start.
99% is 99/100, which is 0.99; not 99.
Reply
Submit reply
Turn on thread page Beta
Related discussions:
- Maths problem solving number theory
- Annoying casio calculator bug - is it just mine?
- Stuck with python code problem
- Casio fx cg-20 not entering examination mode
- Opinions on *2017 EDEXCEL Further Maths and Maths ...
- Hard A* GCSE Question Challenge - Perfect for Edexcel ...
- Best Calculator For GCSE Mathematics.
- UKMT Folded Rectangle Pentagon Problem
- Please explain how do you do this simple maths problem?
- Maths Problem: x powers
TSR Support Team
We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.
This forum is supported by:
- Gingerbread101
- RDKGames
- Changing Skies
- F1's Finest
- rayquaza17
- SherlockHolmes
- davros
- charco
- Kvothe the Arcane
- TeeEff
- The Empire Odyssey
- Protostar
- TheConfusedMedic
- Notnek
- Mr M
- nisha.sri
- claireestelle
- Doonesbury
- furryface12
- Amefish
- harryleavey
- Lemur14
- brainzistheword
- Rexar
- Sonechka
- TheAnxiousSloth
- EstelOfTheEyrie
- CoffeeAndPolitics
- an_atheist
- Labrador99
- EmilySarah00
Updated: June 18, 2016
Share this discussion:
Tweet