The usual practice is that .5 or higher (.6, .7 etc.) is rounded up to the next highest integer, so that for example 8.5 can be rounded up to 9. You can do the same thing at any position in the number, for example, you can round up the number 432,669.00735 to 432,669.0074 if you so desire.
0.000039 as you have to round it up. 3 and 8 are the significant figures but as you must round up, the answer becomes 0.000039.
To round the number 1127436092 to four significant figures, identify the first four significant digits, which are 1127. The next digit is 4, which is less than 5, so you do not round up. Therefore, the number rounded to four significant figures is 1127000000.
When multiplying numbers with significant figures, round the final answer to match the number with the least significant figures in the original numbers.
To round 1,248,486 to four significant figures, you focus on the first four digits, which are 1, 2, 4, and 8. The digit following these is 4, which means you do not need to round up. Therefore, 1,248,486 rounded to four significant figures is 1,248,000.
Starting at the second digit after the decimal, if it is between 0 and 4, you round the first digit down. If it is between 5 and 9, you round it up. If the third digit is between 0 and 4, you round the second digit down. If it is between 5 and 9, you round the second digit up. Rounded to.......... 1 signifcant figure: .3 2 significant figures: .29 3 significant figures: .294 4 significant figures: .2943 5 significant figures: .29430
To round a number to 2 significant figures, you first need to look at the first two digits. In this case that is 3.5. The next step is to look at the third digit and assess if we need to round up. If the digit is 5, 6, 7, 8 or 9 you round up. Otherwise you leave the figures as they are (round down). In this case the third digit is 8, and so we do need to round up. Thus 3.582 rounded to 2 significant figures is 3.6
1100 to 3 significant figures is 1.10e3
2808 into 3 significant figures is 2810
17.9867 to 3 significant figures is 18.0
To round 296124 to two significant figures, we focus on the first two digits, which are 29. The next digit is 6, which is greater than 5, so we round up. Therefore, 296124 rounded to two significant figures is 300000.
To round 233.356 to 2 significant figures, you first identify the first two non-zero digits from the left, which are 2 and 3. The digit after the second significant figure is 3. Since 3 is greater than 5, you round up the last significant figure. Therefore, rounding 233.356 to 2 significant figures gives you 230.
If you are rounding off to two significant figures the result is 33.Sixes always round up to the next higher digit i.e.296 to two significant figures is 30 *101