An easy question on clever sums for P1–P2, 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.
13 + 12 + 37 + 38 = ?
What is the answer?
Show the hints (2)
💡Hint 1: Look for two numbers that add up to exactly 50.
💡Hint 2: You can add in any order. Add each pair that makes 50 first.
Worked solution
Have a go first, then read the solution step by step.
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