Step 1: Understand the conversion ratio

Before we start the conversion process, it is important to understand the conversion ratio between millimeters (mm) and inches (in). One inch is equal to 25.4 millimeters. This means that for every 25.4 millimeters, there is 1 inch.

Step 2: Write down the given value

In this case, the given value is 25mm. So, we write down 25mm to represent the given value.

Step 3: Set up the conversion equation

Using the conversion ratio, we can set up a simple conversion equation to convert mm to in. The equation is: (value in mm) ÷ 25.4 = (value in inches).

Step 4: Substitute the given value

We substitute the given value of 25mm into the equation, making it: 25mm ÷ 25.4 = (value in inches).

Step 5: Simplify the equation

Using a calculator, we can simplify the equation to get the value in inches. The simplified equation will look like this: 0.98425197 = (value in inches).

Step 6: Round off the value

Since the value of 0.98425197 is quite long, we can round it off to the nearest decimal point to get a more manageable value. In this case, we will round it off to 0.98.

Step 7: Add the unit to the value

To represent the value in inches, we add the unit symbol “in” to the value. Therefore, the final answer is 0.98in.

So, the conversion of 25mm to inches is 0.98in.