Times table tricks › The 10s · En español

The 10 times table trick

Put a zero on the end.

1. 10 × 7
2. 7 | 0
3. 70

1. 10 × 7: write 7, add a zero, 70.

Examples

• 10 × 7: 7 → 70
• 10 × 12: 12 → 120

Why it works

Multiplying by 10 moves every digit one place to the left, and the empty ones place gets a 0.

Try it: 10 questions

The 10 times table

• 10 × 1 = 10
• 10 × 2 = 20
• 10 × 3 = 30
• 10 × 4 = 40
• 10 × 5 = 50
• 10 × 6 = 60
• 10 × 7 = 70
• 10 × 8 = 80
• 10 × 9 = 90
• 10 × 10 = 100
• 10 × 11 = 110
• 10 × 12 = 120

Printable sheet (PDF) The trick, the full table and 20 practice problems with answers, on one page.

Flash cards (PDF)

Common questions

Does adding a zero work for decimals?

Not quite: for decimals, move the decimal point one place to the right instead. 10 × 2.5 = 25.

More tricks: 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 11 · 12. Or take the 1-minute multiplication test.