Decimal to Fractional

[rusko]

Anyone know the mathematical formula to turn decimal oods to fractional?

[TheOldhamWhisper]

This is a chart I use for place betting, but it could prove useful as all the fractions are converted to decimals:

http://www.racingwhisper.com/placebetting.htm

[rusko]

Thank you, i'll use the chart, there obviously isn't an easy way. Why do some bookies still use fractional, as decimals is a lot easier?

[Win2Win]

One word of advice for any budding pro-punters. If your no good at maths, you'll never make any money, as a minute to minute grasp on numbers must be kept at all times.

Your best going to college, as you don't get paid for anything unless you put some work into it, and it's the same for pro-punting.

Knowledge of how to handle statistics as well is also important.

[Bill]

Hi rusko,
A simple way to convert decimals to fractions is to take the digits after the point and if there is one,
put this digit over 10.
e.g. 5.5 to one converts to 5 and 5/10ths to one.
i.e. 5 and 1/2 to one, or 11/2.
If there are two digits after the point then these go over 100.
e.g. 5.75 to one converts to 5 and 75/100 to one.
i.e. 5 and3/4 to one or 23/4.
If three digits after the point then these go over 1000 and so on.

[GLENCROFT]

Suppose odds are for example 2.283283....

ignoring the 2 for now

let x = 0.283

then 1000x = 283.283 (multiply both sides by 1000)

then 1000x = 283 + x (as x is .283)

then 999x = 283 (subtract x from both sides)

then x = 283/999

so your odds are 2 and 283/999

.... yeah stick to decimals !

[Dr David]

Anyone know the mathematical formula to turn decimal oods to fractional?

i) Take the Decimal and subtract 1
ii) Take the decimal fractional part and divide into 1 (or use the reciprocal button on your calculator - it's normally marked 1/x)
iii) this value is the denominator (bottom part) of your UK fractional form

This is better illustrated by an example:
Convert 2.40 Decimal to UK Fractional

i) 2.40 - 1 = 1.4 = 1 + 0.4
ii) 1/0.4 = 2.5 (which is the denominator of the UK Fractional)(Proper)
iii) we now have 1 + 1/2.5 = 1 1/2.5 = 1 2/5 (this is a Proper Fraction)
iv) convert to an Improper
(5 x 1 + 2)/5 = 7/5 This is the required form

You have to be careful with some as the Decimal fractions are sometimes 'rounded off'
e.g. 13/8 is often shown as 2.62 in Decimal when infact it's actually 2.625
Using this figure and the above proceedure we have
2.625 - 1 = 1.625
Reciprocate the decimal fractional part (0.625) = 1.6
We have
1 + 1/1.6 = 1 1/1.6 = 1 10/16 = 1 5/8 (proper) = 13/8 (improper)

[plater]

Well done DR David, worthwhile contributions are always welcome on this Forum, be nice to people and they will be nice in return..

Plater