Upper and Lower Bounds

Question 1:

Find the lower bound of 5000 rounded to 1 s.f.

4500

Question 2:

Find the upper bound of 1460 rounded to 3 s.f.

1465

Question 3:

Find the lower bound of 26 rounded to 2 s.f.

25.5

Question 4:

Find the lower bound of 92 rounded to 3 s.f.

91.95