## How to Multiply Decimal Numbers by 10s, 100s and 1000s (Powers of 10)?

#### Concepts Explained

#### 1. Find the product of 3.216 and 10.

3.216 × 10 = 32.16

When you multiply a decimal number by 10, its decimal point moves 1 place to the right.

**Quick trick:**Since there is 1 zero in 10, move the decimal point 1 place to the right.#### 2. Find the product of 3.216 and 100.

3.216 × 100 = 321.6

When you multiply a decimal number by 100, its decimal point moves 2 places to the right.

**Quick trick:**Since there are 2 zeroes in 100, move the decimal point 2 places to the right.#### 3. Find the product of 3.216 and 1000.

3.216 × 1000 = 3216.0 = 3216

When you multiply a decimal number by 1000, its decimal point moves 3 places to the right.

**Quick trick:**Since there are 3 zeroes in 1000, move the decimal point 3 places to the right.#### 4. What is 3.216 × 200?

**3.216 × 200**

= 3.216 × 2 × 100

= 6.432 × 100

= 643.2

200 = 2 × 100

3.216 × 2 = 6.432

3.216 × 2 = 6.432