Upper and Lower Bounds

Question 1:

Find the upper bound of 0.7 rounded to 1 d.p.

0.75

Question 2:

Find the upper bound of 1.553 rounded to 3 d.p.

1.5535

Question 3:

Find the lower bound of 0.091 rounded to 3 d.p.

0.0905

Question 4:

Find the upper bound of 58 rounded to 2 s.f.

58.5