4.25 What is the number of decimal parts?

4.25 The number of decimal parts is equal to 17/4.

According to the numerator or denominator, the same multiple is enlarged or reduced at the same time, and the result remains the same, so 4.25 can be regarded as 4.25 of 1, so enlarging 100 times results in 425/ 100, and reducing the numerator and denominator by 25 times results in 17/4.

Extended data:

1. An equation with an unknown number is called an equation, or an equation with an unknown number is an equation.

2. Holding the value of the unknown quantity of the equation is called the solution of the equation, or the root of the equation.

3. Solving the equation is the process of finding the values of all the unknowns in the equation.

4. The equation must be an equation, and the equation is not necessarily an equation. An equation without unknowns is not an equation.

5. Verification: After solving the equation, verification is needed. Verification is to substitute the unknown value into the original equation to see if both sides of the equation are equal. If they are equal, then the value obtained is the solution of the equation.

6. Note: Write the word "Xie", align the equal sign and check.

7. The equation depends on the relationship between the parts of the equation, and the relationship between addition, subtraction, multiplication and division (addend+addend = sum, and-where one addend = another addend, difference+subtraction = minuend, minuend-difference = subtraction, factor × factor = product, product/factor = another.