Upper and Lower Bounds

Question 1:

Find the lower bound of 0.874 rounded to 3 d.p.

0.8735

Question 2:

Find the upper bound of 2.677 rounded to 3 d.p.

2.6775

Question 3:

Find the lower bound of 522 rounded to 3 s.f.

521.5

Question 4:

Find the lower bound of 7.46 rounded to 3 d.p.

7.4595