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1. 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
2. (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
99 x 2 = 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
3. (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
The mark scheme answer is 1.98 x 10^9
My calculator isn't giving me that answer
4. (Original post by CresentHan)
The mark scheme answer is 1.98 x 10^9
My calculator isn't giving me that answer
Oh shoot sorry!

to convert:

198 x 10^11 into 1.98 x 10^9

You divide 198 by 10 twice.

So not 1.98 x 10^12

Its 1.98 x 10^9
5. (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
99x2x10^9=1.98 x 10^11 so I don't know what you're on about.....

Sure you're using the right numbers?
6. (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?
Yes! It's on the mark scheme, haha!
I'm just as stuck as you! x
7. make sure it's on degrees mode and not radians or anything.
8. (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 not 1.98 x 10^12

Its 1.98 x 10^9
That's okay, thank you!
9. (Original post by sulaimanali)
make sure it's on degrees mode and not radians or anything.
It's on degrees! x
10. (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
You need to clarify. 99 * 2 * 10^9 = 1.98 * 10^11. End of. The markscheme is wrong or you are reading it wrong.

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.
11. 2x99=198

198x10^9=1.98x10^11

So you've given us the wrong numbers somewhere.
12. Output power = 99% × 2 ×10^9= 1.98 × 10^9 (W)

This is what the markscheme says
13. (Original post by CresentHan)
Output power = 99% × 2 ×10^9= 1.98 × 10^9 (W)

This is what the markscheme says
Well, that's what you get for not putting it into context to begin with. 99% is not 99, 99% is equivalent to 0.99x. So 0.99 x 2 x 10^9 is 1.98x10^9.
14. 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 on
Spoiler:
Show
Then and only then resort to hitting it XD
#lifehacks
15. 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.
16. (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.
Sorry! Bit of a dim move haha! Thanks guys!

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Updated: June 18, 2016
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