Rounding to Significant Figures

Question 1:

Round to 2 s.f. 0.001948

0.0019

Question 2:

Round to 2 s.f. 5.045E-5

5.0E-5

Question 3:

Round to 2 s.f. 48.333

48

Question 4:

Round to 2 s.f. 6.4842

6.5

Question 5:

Round to 2 s.f. 0.0090244

0.009

Question 6:

Round to 1 s.f. 0.0022745

0.002