TalentJR apps
The final race mixes every lesson in the course. Before each sum, take one second to spot which trick fits — pairs that make 10, rounding, doubling, halving, ten plus half, nines — then go.
✓ You passed this lesson’s test.
Spot the trick — “look at the numbers first, then use the quickest method”
Use it for: Speed maths competitions, olympiad mental rounds, and timed tests in school.
Check: 84 × 15 = 84 × 5 × 3 = 420 × 3 = 1260 ✓
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 — and beat the clock: finish within 4 min.
🏅 Sign in with Google to earn the 🏆 Speed Champion badge when you pass — and a certificate when you finish all 5 lessons of Part 3 · Speed dividing, percentages and checking. 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.