Upper and Lower Bounds

Question 1:

Find the upper bound of 8.74 rounded to 2 d.p.

8.745

Question 2:

Find the lower bound of 5.27 rounded to 2 d.p.

5.265

Question 3:

Find the upper bound of 2000 rounded to 1 s.f.

2500

Question 4:

Find the lower bound of 2.2 rounded to 1 d.p.

2.15