a) 1687

b) 624

a) 3214 (use bus stop method to calculate)

b) 32 (use bus stop method to calculate)

a) 12,360 (simple HTU approach)

b) 1,142 (simple HTU approach)

a) 8

b) 56

For both of the above questions, remember the rules of BIDMAS. **BIDMAS** stands for Brackets, Indices, Division, Multiplication, Addition, Subtraction. Solve questions in this order.