Rounding to Significant Figures

Question 1:

Round to 1 s.f. 841.46

800

Question 2:

Round to 3 s.f. 7.2501

7.25

Question 3:

Round to 1 s.f. 2.6728

3

Question 4:

Round to 2 s.f. 0.059602

0.06

Question 5:

Round to 1 s.f. 0.00025726

0.0003

Question 6:

Round to 2 s.f. 4.086E-5

4.1E-5