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This is the tens-first idea with one more place. Multiply the hundreds first — that gives you the size of the answer straight away — then add the tens part and the ones part to a running total.
✓ You passed this lesson’s test.
Biggest part first — “multiply hundreds, tens and ones, and keep a running total”
Use it for: Cost of 7 tickets at ₹346, distances over a week, and checking long multiplication.
Check: 350 × 7 = 2450, and 2450 − 4 × 7 = 2450 − 28 = 2422 ✓
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 🏗️ Hundreds Builder badge when you pass — and a certificate when you finish all 9 lessons of Part 4 · Bigger numbers, fractions and the calendar. 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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