A medium question on clever sums for P2–P4, with a step-by-step solution, diagrams and the answer. The first few questions of a competition paper are often clever sums, and the Hua Xia Cup has them in every year from P1 to P6.
The question
Work this out the clever way.
14 × 31 + 31 × 86 = ?
What is the answer?
Show the hints (2)
💡Hint 1: Do the two parts share a number?
💡Hint 2: Take the shared 31 outside and work out the sum in brackets first.
Worked solution
Have a go first, then read the solution step by step.
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