2.5368 already has 5 significant digits.
3.42*10^-5
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 convert the number 0.004758 to three significant figures, we need to round it off appropriately. Identify the significant figures: The given number, 0.004758, has 5 significant figures. Determine the significant figures based on the three most significant digits: The three most significant digits in 0.004758 are 4, 7, and 5. Round the number: Look at the digit immediately after the third significant figure, which is 7. Since 7 is 5 or greater, we round up the third significant figure (5). Apply rounding: The number rounded to three significant figures is 0.00476. Therefore, 0.004758 rounded to three significant figures is **0.00476**.
4 significant figures.
1.000 x 10^5
To round numbers to the correct number of significant figures, start by identifying the last significant figure you want to keep. Then, look at the next digit - if it is 5 or greater, round up; if it is less than 5, round down. Finally, adjust the rest of the digits to the right of the last significant figure to zeros.
All of those figures are significant. If you want to round it to 2 sig figs, that would be 13.
5 significant figures.
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.
It is 77 because you round 5 to 0, and round 6 to 7.
To round 115 to two significant figures, you first identify the two most significant digits, which are 1 and 1. The third digit, 5, is the deciding factor for rounding. Since 5 is equal to or greater than 5, you round up the last significant digit. Therefore, 115 rounded to two significant figures is 120.
Assuming 5 is not an exact value, the 5 has one significant figure and the 5.364 has four significant figures. 5.364 x 5 = 26.82 However, since 5 only has one significant figure, you would round the 26.82 to be 30 or 3 x 101 30 has one significant figure.