It is the first figure that's not a zero. This applies to all numbers.
0.00618 rounded to one significant figure is 0.006
0.000892 to 1 significant figure is 0.0009 (1st significant figure is the first non-digit from the left, where in this case you can omit the number 2 since it will make no difference to the answer)
Abrahamis the first of the three patriarchs of Judaism.
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.
8 significant figures. The decimal makes the first 5 zeros significant while the two zeros after the decimal are significant because there is a significant figure earlier (2).
Any digit in a number which is to the right of the first digit which isn't a zero, including the first digit
The first significant figure of 0.000169 is the 1 and it has 3 significant figures.
The first significant figure is the leading 2 but, to one sig fig, the number is 30000.
0.019 to 1 significant figure is 0.02 (significant figure is counted from the left with 1st significant being the first non-zero from the left)
4
2,000
The first significant figure is the first number which is not zero (in this case, it is the three). All numbers beyond this are significant. So the third significant figure is the 9. In this case, the number rounds down to 0.0309
0.000892 to 1 significant figure is 0.0009 (1st significant figure is the first non-digit from the left, where in this case you can omit the number 2 since it will make no difference to the answer)
The significant figure of 37.753 to 1 significant figure is 40.
Abrahamis the first of the three patriarchs of Judaism.
In 10.00, the first significant figure is the "1", and the last significant figure is the last "0", because zeroes to the right of the decimal are significant. The two central zeroes are also significant because they are between significant figures, so 10.00 has 4 significant figures.
0.027 The first significant figure is the first non-zero digit from the left hand end. So the first two significant figures are 0.026, however, the third significant figure is 7 which is 5 or more, so the 0.026 is rounded up to 0.027.
Two rules associated with significant figure :-. When rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". Zeros must be kept to show the position of the decimal point or to indicate that zero is a significant figure. Then 0.000 must be kept to show the position of the decimal point. 763 are thus the three significant figures and no change is required as the first figure to be discarded is 2 and this is less than 5. The answer to 3 significant figures is 0.000763