Upper and Lower Bounds

Question 1:

Find the upper bound of 95.4 rounded to 3 s.f.

95.45

Question 2:

Find the lower bound of 170 rounded to 2 s.f.

165

Question 3:

Find the upper bound of 597 rounded to 3 s.f.

597.5

Question 4:

Find the upper bound of 0.39 rounded to 2 d.p.

0.395