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  1. Jan 9, 2017 · Restore a built-in app that you removed. Go to the App Store. Search for the app. Make sure that you use the exact name of the app. Find the correct name of built-in apps. Wait for the app to restore, then open it from your Home screen. It sounds like you deleted the calculator app. Here's the steps to redownload the app:

    • Convert values
    • Round results
    • Enter complex equations using Reverse Polish Notation (RPN)
    • Show decimal points
    • Correct unexpected results
    • Use keyboard shortcuts

    •In the Calculator app on your Mac, enter the original value, choose Convert in the menu bar, then choose a category, such as Temperature or Currency.

    Note: You must be connected to the internet to get the most recent currency conversion rate.

    •In the Calculator app on your Mac, choose View > Decimal Places, then choose the number of decimal places to display. Calculator stores the full value and displays the rounded value. If the displayed value shows fewer decimal places than you specified, the undisplayed decimal places are zeros.

    1.In the Calculator app on your Mac, choose View > RPN Mode.

    The stack is shown in Calculator’s display, the Equal Sign key (=) becomes the Enter key, and four keys appear for manipulating numbers on the stack.

    2.Do any of the following:

    •Swap the bottom two numbers on the stack: Click the Exchange Registers key .

    •Move the most recently entered number up or down on the stack: Click the Roll Up key or Roll Down key .

    •Remove the bottom number from the stack: Click the Drop key.

    If your results don’t contain decimal points, they may not be as precise as they should be. This can occur because the programmer calculator truncates all digits after the decimal point. (For example, if you enter 99 / 10=, the result is 9.) The number of decimal places may also be set incorrectly and the calculator rounds the result. (For example, if decimal places is set to zero and you enter 99 / 10=, the result is 10.)

    For more precise results, do any of the following in the Calculator app on your Mac:

    •Choose View > Basic or View > Scientific.

    •Choose View > Decimal Places (in any calculator).

    In the Calculator app on your Mac, do any of the following:

    •Repeat the calculation, keeping in mind that Calculator uses the fundamental order of operations to evaluate expressions. For example, multiplication operations are completed before addition and subtraction.

    •If the programmer calculator displays numbers in an unexpected format, change to octal, decimal, or hexadecimal format: click the 8, 10, or 16 key, respectively, under the calculator’s display. Or use the basic or scientific calculator.

    •If you’re not sure you entered the calculation correctly, use the Paper Tape (choose Window > Show Paper Tape) to review what you entered.

    All calculator types
    Scientific calculator
    RPN Mode
    To show a running list of your calculations, choose Window > Show Paper Tape. To perform advanced calculations involving equations and graphs, use the Grapher app. See the Grapher User Guide. See alsoApple Support article: Mac keyboard shortcutsGet more help for your Mac
  2. Mar 8, 2023 · Step 1: Press Command + Spacebar to open Spotlight Search, type Calculator, and press Return. Step 2: Click on View at the top Menu Bar. Step 3: Click on RPN Mode to disable the feature if enabled ...

    • Paurush Chaudhary
    • Writer
    • Male
    • February 21, 1995
  3. Mar 28, 2023 · How to activate the scientific calculator on a Mac. Launch the Calculator app on macOS. Hold on the Command button, then tap the number 2 on your keyboard. This will reveal the scientific ...

    • Former Apple Editor
  4. Jul 15, 2015 · How to reset calculator on Mac Book air. Hi: I have a Mac Book Air. I were using the calculator and pressed a green button with a + sign on it, the button was beside two other buttons, a red one that close the calculator and an another orange button that minimizes the calculator. When I pressed the green button, my calculator got many another ...

  5. Apr 26, 2022 · 112,811 points. Apr 26, 2022 11:20 AM in response to TheOriginalPatricio. Keep the calculator on an unused part of your screen where it is always visible and only a mouse-click or cmd+tab selection away to use it. Since it will be in your Dock, a single click there will make it top-most over existing window occlusion.

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  7. Feb 8, 2023 · Open System Preferences (System Settings on macOS Ventura and above) Click on Keyboard icon. Click on Shortcuts tab. Select Services. Find “Run Calculator” and select the shortcut, e.g. Option (Alt), Command and slash. Close System Preferences and test the keyboard shortcut. Use Automator to Create Quick Function.