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When two numbers have the same front part and their last digits add up to 10 (43 × 47, 92 × 98, 121 × 129), the answer comes in two quick pieces.
✓ You passed this trick’s test.
Antyayoreva — “only the last digits”
Use it for: Pairs like 34 × 36, 71 × 79, 123 × 127. (Trick 2, squares ending in 5, is the special case 5 + 5.)
Check: 92 × 98 = 92 × 100 − 92 × 2 = 9200 − 184 = 9016 ✓
▶ Watch it animated✓ Written and checked by the TalentJR team · Updated 13 Oct 2026 · How we make our lessons
Work it out in your head or on paper, then tap your answer — or type it and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
20 sums. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 🔟 Ten-Pair Pro badge when you pass — and a certificate when you finish all 10 tricks of Part 3 · Expert tricks. 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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