1250.37986
rounded to four significant figures is ??????
http://www.chemteam.info/SigFigs/SigFigs.html
thanks I think I acn do that one now...Regards Andy
1.250X10^3 ....hows that???
yup that's right
thanks so much....andy
To round a number to four significant figures, follow these steps:
1. Identify the first four significant figures in the number. Significant figures are all the non-zero digits and any zeros sandwiched between non-zero digits.
In the number 1250.37986, the first four significant figures are 1, 2, 5, and 0.
2. Determine if the fifth digit is closer to 0 or 1-9. If it is exactly 5, round the last significant figure to the nearest even number.
In this case, the fifth digit is 3, which is closer to 0.
3. Drop all the digits after the fourth significant figure.
Dropping the digits after the fourth significant figure, the rounded number is 1250.
Therefore, 1250.37986 rounded to four significant figures is 1250.