How to convert 21 4/5 to a decimal number?

Some mixed numbers, such as 21 4/5, represent a value that can also be expressed as a decimal (which can make certain calculations and comparisons easier to perform).

Step-by-step conversion of 21 4/5 to a decimal number

  1. Multiply the whole number by the denominator: 21 × 5 = 105
  2. Add this result to the numerator: 105 + 4 = 109
  3. Divide the previous result by the denominator: 109 ÷ 5 = 21.8

So the mixed number 21 4 5 as a decimal is 21.8.

Please note that you can also express this result as a fraction: 109/5.