0.4
0.039
70
65000
Integers ending in 0 are ambiguous since it is not possible to distinguish between a number accurate to the nearest unit and one rounded to the nearest 10. It has 1 significant figure, but could have 2 sf.
sf sf sf
The number cannot be 64 when rounded to 1 sf.
There is no such thing as a nearest significant figure. For sf (as with decimal places) it is necessary to specify how many. 0.00747 to 1 sf is 0.007, to 2 sf it is 0.0075, to 3 sf it is 0.00747, to 4 sf it is 0.007470 and so on.
It is: 0.00046
0.002353 rounded to 2 sf is 0.0024
0.84557 acre (rounded)
0.039
3.27 x 2.35 = 25.128315 Any of those numbers can be rounded to any number of significant figures (SF) both before and after the multiplication. We just need to know how many SF you would like.
The rounded value is 10. See also the links below. * * * * * However, there is no such thing as the correct number of significant figures (sf). SF depends on the context as well as the SF of the numbers used to compute the value.
0.00100 Although the two trailing zeros do not change the value of the number their presence indicates the number of sf.
1 sf is the area represented by a square that has a length of 12 inches (1ft) and a width 12 inches (1ft) This area does NOT have to be a square, it can be any 2 dimensional shape. ----- 1 sf could also mean 1 significant figure. That is a value rounded in such a way that it contains only one non-zero digit. For example: 4321 = 4000 or 21.34 = 20 or 0.0063 = 0.006
To round off the number 408.9 to one significant figure (sf), you look at the first non-zero digit, which is 4. The next digit is 0, which does not round the 4 up, so the rounded number is 400. Therefore, 408.9 rounded to one significant figure is 400.
0.00721004 = 0.00721 to 3 sf.