Read time: 2-3 minutes

Exercise: Using one of JPDocu School of Technical Writing style guides, explain to your grandmother how to calculate the money she has to pay to order one cup of coffee for and a sandwich for $2.

What is the Calculator App?

The calculator app is a tool that figures out math calculations for you. It's useful for when you want to do math fast, without doing the calculations yourself. In the calculator app you can add, subtract, multiply, and divide numbers.

Here is what the calculator app looks like:

How do I use it?

For an example on how to use the calculator app, let's pretend you want to buy one cup of coffee for $1, and one sandwich for $2. If you wanted to do this on paper you would write "1 + 2" to figure this out. You are doing something similar in the calculator app, but with clicks of your left mouse button.

Here is a step by step on how to add 1 and 2 together in the calculator app:

1. To begin your calculation (1 + 2), click the left mouse button on 1. After clicking 1, a 1 appears in the input field.

2. To add the next number in your calculation, click the left mouse button on the plus (+) sign. After clicking the plus (+) sign a "1 +" at the top of the input field. This shows you what you pressed so far.

3. To complete your equation, click the left mouse button on 2. After clicking 2, a 2 appears in the input field.

4. To sum your equation, click the left mouse button on the blue equal sign. This sums up your calculation "1+2." Your result appears on the input field. You're done!

5. To erase your calculations and start a new one, press the C button. C stands for "Clear all entries."