How to Turn Off a Normal School Calculator: Step-by-Step Guide

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Learn how to turn off your calculator, no matter the type
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Are you using a calculator at school but can't figure out how to turn it off? Don't worry—almost all calculators are designed to turn off automatically after a few minutes of no use. But if you need to turn the calculator off immediately, we can help! This wikiHow will teach you which button combinations to enter to turn off the most common school calculators, including Casio, Citizen, TI-84, and more.

Turning Off a School Calculator

Normal calculators without an off button will turn off on their own after a few minutes. If the calculator has a solar panel, cover it up to force the calculator to shut off. If your calculator has an ON/OFF button, you may need to press the 2nd button before pressing ON/OFF to turn off the calculator.

Section 1 of 6:

Solar Calculators

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  1. Most calculators will turn themselves off after not being used for a few minutes. If you don't need it, just set it aside for a few minutes, and it should turn off on its own.
  2. You may be able to force a solar calculator off by placing your thumb over the entire solar strip. Once the calculator stops receiving light, it should begin to dim and then shut down.
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  3. One of the following combinations may shut off your calculator. Press and hold the buttons shown:
    • 2 3
    • 5 6
    • ÷ ×
    • 9 -
    • 1 2 4 6
    • 1 3 4 5
    • 1 2 3
  4. With the right combination of keys above, this should shut off the calculator.
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Section 2 of 6:

Citizen Calculators

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  1. Citizen calculators shut off about eight minutes after the last input. Your calculator should shut off on its own. [1]
  2. This combination of buttons will turn off most Citizen brand calculators:
    • ÷ × % Check Correct Correct
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Section 3 of 6:

Texas Instruments Graphing & Scientific Calculators

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  1. On most TI graphing calculators , 2nd is the colored button on the left side. The color is different on different models, but it usually stands out from the rest of the buttons. ON is usually on the right side above the number buttons.
    • On some calculator models, the ON button may be in the lower-left corner.
    • The ON button may say ON/OFF .
  2. This unlocks the secondary key functions for all the keys.
  3. This will turn the graphing calculator off.
    • To turn off a TI Nspire, press Ctrl followed by On . [2]
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Section 4 of 6:

Casio Graphing & Scientific Calculators

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  1. On most Casio graphing and scientific calculators , the "Shift" button is in the upper-left corner below the screen. The "On" button is on the right side, above the number buttons. [3]
  2. This button unlocks all the secondary functions for the buttons.
  3. The secondary function for "AC" is off. This turns off the calculator. [4]
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Section 5 of 6:

HP Graphing & Scientific Calculators

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  1. On most HP calculators, the "Shift" key is on the left side. The "On" button is either on the right side or in the lower-left corner.
  2. This unlocks secondary key functions.
  3. The secondary key function for "On" turns the calculator off.
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Section 6 of 6:

Casio DJ Series Calculators

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  1. The "DISP" button is usually on the left side of the calculator. Press and hold it.
  2. This button is usually on the right side or near the top. Make sure you are still holding "DISP" while pressing "Correct".
  3. Pressing and holding both the "DISP" and "Correct" buttons at the same time will turn off the calculator. [5]
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Community Q&A

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  • Question
    How to turn off my calculator if it is a CT-555N?
    Community Answer
    These calculators have a sensor which detects when it is not used for an amount of time to turn off by itself.
    Thanks! We're glad this was helpful.
    Thank you for your feedback.
    If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
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    Not Helpful 49 Helpful 55
  • Question
    How do I turn off a W39231 calculator?
    Community Answer
    If the calculator has solar panels, put your finger over them, or place the calculator upside down on a flat surface. It will eventually shut itself down.
    Thanks! We're glad this was helpful.
    Thank you for your feedback.
    If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
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    Not Helpful 27 Helpful 35
  • Question
    How do I turn off a Casio DJ-120 calculator?
    Community Answer
    Press and hold the "display" button and "correct" button at once. Release the "display" button while still holding the "correct" button, and the calculator will turn off.
    Thanks! We're glad this was helpful.
    Thank you for your feedback.
    If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
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      References

      1. ↑ https://www.citizen-systems.co.jp/english/support/download/electronic/calculator/instruction/data_scientific/SR270X.pdf
      2. ↑ https://www.usna.edu/MathDept/_files/documents/resources/TI-Nspire_CX_Handheld_GettingStarted_EN.pdf
      3. ↑ https://support.casio.com/global/en/calc/manual/fx-82MS_85MS_220PLUS_300MS_350MS_en/before_using_calculator/getting_started/turning.html
      4. ↑ https://support.casio.com/global/en/calc/manual/fx-82MS_85MS_220PLUS_300MS_350MS_en/before_using_calculator/getting_started/turning.html
      5. ↑ https://www.youtube.com/watch?v=oAfvRgvdlGY

      About This Article

      Article Summary X

      1. Wait for it to turn off on it's own.
      2. Cover the solar strip.
      3. Press and hold " ON ", " C ", " CE ", or " AC ".
      4. Press " 2nd " followed by " On "
      5. Press " Shift " followed by " AC ".
      6. Press " Shift " followed by " On ".
      7. Press the button combination specified in the user's manual.
      To learn how to turn off a graphing calculator, scroll down!

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