online exam

PART A
Question 1:
I.
a) 300 ÷ (8 2 + 6 2) (3 × 2 + 2)
= 300 ÷ (100) (8)
= 300 ÷ 800
= 0.375
b) (400 ÷ 202) (625 ÷ 125)
= (1) (5)
= 5
c) 810 ÷ 9 (5 × 5 -5) – 200
= 810 ÷ 9 × 20 – 200
= 90 × 20 – 200
= 1800 – 200
= 1600
d) 2 × [502 ÷ (2 × 54)]
= 2 × [2500 ÷ 1250]
= 2 × 2
= 4
e) [144 ÷ (10 + 8)] ÷ 2 + 10 – 2 + [(52× 2) 2]
= [144 ÷ 18] ÷ 2 + 10 – 2 + [100]
= 8 ÷ 2 + 10 – 2 + 100
= 4 + 10 – 2 + 100
= 112
II.
a) 176
b) 99
c) -1