TalentJR apps
Digit puzzles look long but become quick when you count in groups: the ones place, then the tens place, or pages with 1, 2 and 3 digits. Magic squares hide a neat shortcut too — every row is one third of the total.
✓ You passed this topic’s test.
Count place by place — “split the count into ones, tens and hundreds”
Use it for: Digit counting, page numbering, magic square and digit-sum puzzles in Class 5–8 Olympiad papers.
Check: If every page used 3 digits: 120 × 3 = 360; pages 1–9 save 2 each (18) and pages 10–99 save 1 each (90): 360 − 18 − 90 = 252 ✓
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 ✨ Magic Square Maker badge when you pass — and a certificate when you finish all 13 topics of Part 4 · Class 5–10 problem solving. 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.
Prefer a real teacher? TalentJR teachers take live online classes anywhere in India and visit homes in selected cities. Tell us what you need and our team will call you with timings and fees.