there are 2 significant figures in 21000 2 & 1 are the significant figures.
5 significant figures
470g has two significant figures.
2 significant figures
4 significant figures.
There are two significant figures which are the two 2s.
There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.
22.1 to two significant figures = 22
23.81558 to two significant figures is 24.
42 has two significant figures.
Two significant figures.
Two significant figures.
Two of them.
There are two significant figures in 0.068.
Rounded to two significant figures it becomes 30.
34.654 rounded to two significant figures is 35.
Rounded to two significant figures it becomes 58,000