How to convert 21 2/4 to a decimal number?

Some mixed numbers, such as 21 2/4, 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 2/4 to a decimal number

  1. Multiply the whole number by the denominator: 21 × 4 = 84
  2. Add this result to the numerator: 84 + 2 = 86
  3. Divide the previous result by the denominator: 86 ÷ 4 = 21.5

So the mixed number 21 2 4 as a decimal is 21.5.

Please note that you can also express this result as a fraction by simplifying 86/4 = 43/2.