The number 0.0023040 has 5 significant figures because zeros (0s) before other numbers do not count as being significant. So the only significant figures are "23040".
If you write the number in scientific notation, it's easier to tell how many figures are significant.
2.3040 x 10-3 has 5 significant figures.
2 Except that the fact that the figure is given as 3300 g instead of 3.3 kg suggests that the trailing 0s are significant.
You would need to record to the 0.1 cm, then estimate the next significant figure. So you should have a measurement to the 0.01 cm.
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". When 16490 is rounded off to 2 significant figures then the first figure to be discarded is 4. As this is less than 5 then the previous figure (6) is not increased by 1. 16490 to 2 significant figures is 16000.
45.0300mm has six significant figures. A significant figure is any non-zero digit or any embedded or trailing zero. Leading zeros are not significant.
470 rounded to one significant figure is 500
The significant figure 2.00 has to do with the certainty of a measurement.
The number of significant figure is 5
there are 2 significant figures
There is 1 significant figure in this measurement.
Three
Significant figure
There is 1 significant figure in this measurement.
3 of them.
111.0 mm
Significant figures are the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value.
170.040 has six significant figures. A significant figure is any non-zero digit or any embedded or trailing zero. Leading zeros are not significant.
significant figure