1686 rounded to 2 significant figures is 1700
4.5 uses 2 significant figures.
2345 to 2 significant figures is 2300. The 4 in the hundred's place is not enough to round up to 2400.
There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.
Integers ending in 0 are an ambiguous case. I would say 2 significant figures, but if it appeared alongside a list of numbers such as 1710, 1690, 1750, then I would have to say 3 sig figs and if it was with 1705, 1696, 1729 then 4 sig figs.
Four. The number of significant figures in any number is found by counting the number of digits starting with the first non - zero digit (eg 0.12 has 2 sig figures, 304 has 3 sig figures.)
2
2.6
12
0.00245 rounded to one significant figure is 0.002. The first significant figure is '2,' and all digits to the right are replaced with zeros. The leading zeros before the '2' do not count as significant figures.
When rounding the number 213 to one significant figure, you look at the first digit, which is 2. The next digit is 1, which is less than 5, so you do not round up. Thus, 213 rounded to one significant figure is 200.
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.
At least 1 and at most 7. It could be 3,999,999.9 rounded to 7 significant figures; It could be 3,999,999 rounded to 6 significant figures; It could be 4,000,015 rounded to 5 significant figures; It could be 4,000,429 rounded to 4 significant figures; It could be 3,999,999 rounded to 3 significant figures; It could be 4,049,999 rounded to 2 significant figures; It could be 4,492,467 rounded to 1 significant figure.
It is then 0.067 when rounded to 2 significant figures
It is 6.7 when rounded to 2 significant figures
2711 rounded to 2 significant digits is 2700
1,430 rounded to 2 significant figures is 1,400
009999991 rounded to 2 significant digits is 1.0e7