2700
All of those figures are significant. If you want to round it to 2 sig figs, that would be 13.
Five, two and five sig figs respectively.
there are 2 significant figures in 21000 2 & 1 are the significant figures.
Trailing zeros ALWAYS count as significant figures, so 700.0 would have 4 significant figures.
2 significant figures
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
All of those figures are significant. If you want to round it to 2 sig figs, that would be 13.
7000.
54000
rounded to 3 significant figures it would be .00750