Rounding to Significant Figures

Question 1:

Round to 1 s.f. 75892

80000

Question 2:

Round to 3 s.f. 97876

97900

Question 3:

Round to 1 s.f. 0.043284

0.04

Question 4:

Round to 2 s.f. 1.0516

1.1

Question 5:

Round to 2 s.f. 0.079428

0.079

Question 6:

Round to 2 s.f. 0.72177

0.72