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# Standard form! watch

1. Can sum1 please help me with this awful question I found in my text book the answers 5.1135 times 10to the power of 12 cheers
2. Cosmologists think that the Big Bang was 14 thousand million years ago. How many days is it since the Big Bang.take 1 year as 365 and a half days and write yr answer in standard form
3. 5113500000000. By the way what year are you in?
4. (Original post by artymaniac)
Can sum1 please help me with this awful question I found in my text book the answers 5.1135 times 10 to the power of 12 cheers
5.1135 x 1012? That's a rather large number, which would probably be best left in standard form.
But how to write it out in ordinary numbers:
5.00x1012 would be 5 followed by 12 zeroes
5.11 x 1012would therefore be 511 followed by 10 zeroes
So 5.1135x1012 = 51135 followed by 8 zeroes.

As a rule of thumb: A whole number x 10n would represent the whole number followed by n amount of zeroes. For each number after the decimal point you take away one of the zeroes and replace it with the relevant number. So the 1135 would replace 4 of the zeroes.

Hope that helps. You should be able to get it from there.
Spot
5. (Original post by spotify95)
5.1135 x 1012? That's a rather large number, which would probably be best left in standard form.
But how to write it out in ordinary numbers:
5.00x1012 would be 5 followed by 12 zeroes
5.11 x 1012would therefore be 511 followed by 10 zeroes
So 5.1135x1012 = 51135 followed by 8 zeroes.

As a rule of thumb: A whole number x 10n would represent the whole number followed by n amount of zeroes. For each number after the decimal point you take away one of the zeroes and replace it with the relevant number. So the 1135 would replace 4 of the zeroes.

Hope that helps. You should be able to get it from there.
Spot
thanx
6. (Original post by VictoriaCoolio)
5113500000000. By the way what year are you in?
Yr 11 wbu?
7. (Original post by artymaniac)
Yr 11 wbu?
I was in year 13 last year, now University. But standard form is quite hard to understand sometimes, especially when the calculator just displays it in standard form anyway, and you don't know how to convert!

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