Times 10, 100 and 1000 — Maths trick for kids

The trick

Place-value slide — “× 10 moves every digit one place left; a 0 fills the gap”

1. × 10: write one 0 after the number.
2. × 100: write two 0s. × 1000: write three 0s.
3. Missing number: count how many zeros were added — one 0 is × 10, two 0s is × 100.

Use it for: Money (₹10 and ₹100 notes), metres to centimetres, and every big multiplication like 30 × 40.

Worked example: 45 × 100 = 4500

✏️ Practice

Work it out in your head or on paper, then tap your answer — or type it and press Check. Stuck? Press “Show me how”.

🏁 Trick 4 test

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 🚀 Zero Zoomer badge when you pass — and a certificate when you finish all 5 tricks of Part 1 · Finger & table tricks. You can still take the test without signing in.

🖨️ Multiply by 10, 100 and 1000 Worksheet

• Worksheet set 1 (PDF)
• Worksheet set 2 (PDF)
• Worksheet set 3 (PDF)