TalentJR apps
Two numbers between 11 and 19 can be multiplied in three quick steps. Add the ones digit of the second number to the first number, put a 0 after it, then add the two ones digits multiplied together.
✓ You passed this lesson’s test.
Add across, then the ones — “first number + ones of the second, make it tens, add ones × ones”
Use it for: Tables 11–19, areas of small rooms and plots, and olympiad speed rounds.
Check: 17 × 14 = 17 × 10 + 17 × 4 = 170 + 68 = 238 ✓
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 3 min.
🏅 Sign in with Google to earn the 🐯 Teen Tiger badge when you pass — and a certificate when you finish all 5 lessons of Part 2 · Speed multiplying. 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.