Mathematics 0580 · IGCSE · The four operations

The four operations — practice question

(a)[1]

Insert a single pair of brackets into $-12 + 4 \div 2 - 3 = -16$ so that the calculation becomes correct.

(b)[1]

Insert one pair of brackets into $-3 - 4 + 5 - 7 = -5$ to make it correct.

Worked solution & mark scheme

This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Therefore, $-12+4\div(2-3)=-16$.” …