In 1000000 there is one significant figure.
Answer is 1 Sig Fig. You count the "1" as a Significant Figure, and the trailing zeroes are not considered Sig Figs.
1000000.
4 significant figures.
There are 254000000 ångströms in one inch. Therefore, rounded to three significant figures, 1000000 ångströms is equal to 1000000/254000000 = 0.00394 inches.
There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.
There are 3 significant figures in 94.2.
Expressed in figures, this is equal to 1,000,000.
There are four significant figures in 0.1111.
3 significant figures.
4487 has four significant figures.
There are four significant figures in 0.005120.