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On paper we add from the right, but in your head it is easier from the left. Keep the first number whole, add the tens of the second, then its ones.
✓ You passed this lesson’s test.
Tens first — “add the tens, then the ones, from left to right”
Use it for: Adding prices, marks and scores without writing them down.
Check: 58 + 34 = 50 + 30 + 8 + 4 = 80 + 12 = 92 ✓
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 🚂 Tens-First Express badge when you pass — and a certificate when you finish all 7 lessons of Part 1 · Mental addition & subtraction. 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.