Mathematics for IGCSE & O level - The Four Operations (Section 1 - No. 39)
Which of the following calculations demonstrate the correct order of operations?
5 + 2 x 3 = 7 x 3 = 21
5 + 2 x 3 = 5 + 6 = 11
(5 + 2) x 3 = 7 x 3 = 21
(5 + 2) x 3 = 5 + 6 = 11
Explanation
Multiplication is handled before addition in the first case. Brackets are used correctly in the third.
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