Upper and Lower Bounds

Question 1:

Find the upper bound of 404 rounded to 3 s.f.

404.5

Question 2:

Find the upper bound of 0.9 rounded to 2 d.p.

0.905

Question 3:

Find the upper bound of 99 rounded to 2 s.f.

99.5

Question 4:

Find the lower bound of 1410 rounded to 3 s.f.

1405