1. Express 5/8 as a decimal.

2. Express 0.15 as a proper fraction in its simplest form.

3. Evaluate the following:

(a) 0.375 + 0.625 

(b) 10.24 + 2.341 + 0.027 

(c) 0.156 − 0.045

(d) 18.231 − 7.25 

(e) 6.71 − 0.0325 

(f) 4.201 + 1.82 − 3.516

(g) (0.2)² 

(h) (0.02)² 

(i) 3.65 × 3.502

(j) 2.015 × 1.45 

(k) 19.24 ÷ 2.6 

(l) 21.03 ÷ 0.03

(m)

(n) √0.0025

(o) √0.16

(p) √1.21

90.03 14.04 0.03 0.002 +