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Olympiad papers for young children love digit puzzles: make the greatest or smallest number from some digits, or find what a digit is really worth. The trick is to remember that a digit on the left is worth much more than the same digit on the right.
✓ You passed this topic’s test.
Biggest digit, biggest place — “the order of the digits decides the size of the number”
Use it for: Any question that says “using the digits … once each”, and every “place value” or “face value” question.
Check: 2037 uses 2, 0, 3 and 7 once each, and the next smallest choices, 2073 and 3027, are both bigger ✓
Work it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 🔢 Digit Detective badge when you pass — and a certificate when you finish all 7 topics of Part 1 · Class 2–4. You can still take the test without signing in.
Why does it work? When should you use it? Ask in English, मराठी or हिंदी.
Sign in with Google to ask Free — 20 questions a day.
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