10% off 210

To calculate 10% off of 210, you first find 10% of 210: \[ 10\% \text{ of } 210 = \frac{10}{100} \times 210 = 21 \] Now, subtract that amount from the original price: \[ 210 - 21 = 189 \] So, 10% off of 210 is 189.