TalentJR apps
You do not need a calculator for most percentages. 10% is the amount ÷ 10. From that one number you can build 5% (half), 20% (double) and 15% (10% + 5%). 50% is a half, 25% is a quarter, and 1% is ÷ 100.
✓ You passed this lesson’s test.
Build from 10% — “10% is ÷ 10; halve it for 5%, double it for 20%”
Use it for: Discounts and sale prices, marks in percent, tips and GST, and percentages in Class 7–10.
Check: 360 × 15 ÷ 100 = 5400 ÷ 100 = 54 ✓
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 📊 Percent Pilot 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.