Multiply by 10, 100 and 1000 Games Online Free
Multiply whole numbers up to 99 by 10, 100 or 1,000. Each zero moves the digits one place to the left.
Type answers on your keyboard, or tap the number pad.
Practise these again:
How do you multiply by 10, 100 and 1,000?
Multiplying by 10 moves every digit one place to the left, so 45 becomes 450. Multiplying by 100 moves them two places (4,500), and by 1,000 three places (45,000). For whole numbers, that looks like adding one, two or three zeros.
The reverse is practised in divide by 10, 100 and 1000.
How to play Multiply by 10, 100 and 1000
- Choose the 60-second challenge or untimed practice, then press Start.
- Type each answer on your keyboard or tap the number pad. It’s checked as soon as you’ve typed enough digits, or press ✓.
- Get one wrong and you’ll see the right answer, and the question comes back a little later.
- At the end, check your score and the facts to practise again.
Multiply by 10, 100 and 1000 skills
- Multiplying by 10, 100 and 1,000
- Place value: digits moving left
- Multiplying by multiples of 10
Level: Grades 4–5 (ages 9–11)
Tips for multiplying by 10, 100 and 1000
Count the zeros in 10, 100 or 1,000 and add that many to the end of a whole number.
Think of the digits moving, not the decimal point. It works for decimals later: 4.5 × 10 = 45.
Type the answer without commas: 4500.
Multiply by 10, 100 and 1000 questions and answers
Why does multiplying by 10 add a zero?
Each digit becomes worth ten times as much, so it moves one place to the left. The empty ones place is filled with a zero.
Does adding zeros work for decimals?
No. 2.5 × 10 is 25, not 2.50. That’s why it’s better to think of digits moving left. This game uses whole numbers only.
What grade learns this?
US fifth graders explain patterns when multiplying by powers of 10. In England, multiplying by 10 and 100 is a Year 4 objective, and by 1,000 a Year 5 one.