Multiplying by 10
When a decimal is multiplied by 10, every figure moves one place to the left.
Multiplying a decimal by 10
What is 4.25 x 10?
Multiplying by 100
When multiplying by 100, every figure moves two places to the left.
Multiplying a decimal by 100
What is 0.103 x 100?
Multiplying by 1000
When multiplying by 1000, every figure moves three places to the left.
Multiplying a decimal by 1000
What is 0.04 x 1000?
Question
Which is bigger: 0.005 × 10 or 0.0004 × 1000?
The answer is 0.0004 × 1000
If you didn't get it right, remember that multiplying by 10 moves each digit one place to the left.
Therefore, 0.005 × 10 = 0.05.
Multiplying by 1000 moves each digit three places to the left.
Therefore, 0.0004 × 1000 = 0.4.
0.4 is bigger than 0.05.