Mathematical Operations
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Exam-level questions worked step by step. Try each one yourself first — then expand the solution and compare routes.
Q1.
If + means ×, − means ÷, × means + and ÷ means −, then the value of 6 + 2 × 4 ÷ 2 − 2 is:
Q2.
If the signs + and × are interchanged, then the value of 3 × 4 + 5 − 6 is:
Q3.
Which two numbers should be interchanged to make the following equation correct?
4 + 2 × 6 − 3 = 20
Q4.
Which of the following equations is correct?