To change 3.20 into 2 significant figures, simply round it to 3.2. The zero after the 2 is removed as it is not significant when there are only 2 significant figures.
Five, two and five sig figs respectively.
2 significant figures: 5 and 6.
there are 2 significant figures in 21000 2 & 1 are the significant figures.
To round 12.555 km to four significant figures, you would keep the first four non-zero digits, which are 12.56 km since the next digit (5) is greater than 5.
88930371.007 to 2 significant figures is 89000000
Rounded to 2 significant figures it is 0.043
8468 rounded to 2 significant figures is 8500
0.004560 to two significant figures results in: 0.0046
0.000039 as you have to round it up. 3 and 8 are the significant figures but as you must round up, the answer becomes 0.000039.
0.26
0.067
5200
To change 3.20 into 2 significant figures, simply round it to 3.2. The zero after the 2 is removed as it is not significant when there are only 2 significant figures.
7000.
54000
rounded to 3 significant figures it would be .00750