ACT Calculator Policy: Approved & Prohibited Calculators

The ACT calculator policy is a critical rule for students who sit for the college entrance exam, which assesses English, math, reading, and science skills. During the math section, calculators assist students in solving problems more quickly. The use of calculators is, however, limited by certain rules. You can only apply a calculator to the mathematics section, such as the regular math section and the ACT WorkKeys Applied Math section if you are thinking of what calculators are allowed on the ACT. Even though all math problems can actually be solved without one, a calculator can make some problems easier and quicker to solve.

• It's worth mentioning here that it is your responsibility to bring your own authorized calculator with you to the test. 
• Test officials will not supply calculators, so make sure that you bring one that can be accepted by the ACT. For example, graphing calculators can be brought, but internet-linked calculators or QWERTY keyboards cannot. 
• Also, some changes might be necessary for particular calculator models, so it is important to check that your calculator meets the ACT's requirements prior to the test day. 

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To learn more about the approved calculator list, you can go to the ACT's official calculator policy page. By adhering to these guidelines and bringing an approved calculator, you can maximize this device to assist you in conducting your best throughout the exam.

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ACT Approved Calculators List

There are several ACT approved calculators, including four-function calculators, graphing calculators, and scientific calculators. However, the key is to ensure that the calculator you bring is on the list of approved devices. Additionally, certain calculators must be modified to comply with the ACT Calculator policy.

4-Function Calculators

Four-function calculators are the most basic type when considering the ACT calculator policy. They are designed to perform four primary mathematical functions: addition, subtraction, multiplication, and division. Some basic models also include additional functions like square roots and percentages. Although they are permitted on the ACT, four-function calculators are not ideal for more complex mathematical problems, which might make other types of calculators more useful.

Graphing Calculators

Graphing calculators are more advanced devices that can perform complex mathematical functions like plotting graphs, solving trigonometric equations & analyzing data. These calculators are particularly useful for higher-level math problems, making them an excellent choice for students who are comfortable with their functions. Graphing calculators are known as one of the best ACT approved calculators, but you must ensure they do not have any prohibited features.

Scientific Calculators

Scientific calculators are versatile and equipped with features to solve high-level math, science, and engineering problems. They typically offer functions for scientific notation, trigonometric calculations, and statistical analysis. They can be a good middle ground for students who need more capabilities than a four-function calculator but do not want the complexity of a graphing calculator.

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ACT Calculators Permitted after Certain Modifications

Some calculators that are otherwise permitted on the ACT require modifications to meet the test's guidelines. These modifications ensure that the devices do not give an unfair advantage and that they are used in a way that complies with the ACT’s policies.

• Calculators that Can Hold Programs or Documents: If your calculator can store programs or documents, you must remove all files and programs that contain computer algebra system (CAS) functionality. This modification ensures that no advanced computational features are used during the test.

• Calculators with Paper Tape: If you have a calculator with paper tape, you must remove the tape before the test. Paper tape can be distracting and is not allowed during the ACT.

• Calculators that Make Noise: Any calculator that makes noise must have its sound turned off before the test. This prevents distractions for other test-takers.

• Calculators with an Infrared Data Port: Calculators with infrared data ports, such as certain Hewlett-Packard models, need to have the port completely covered with opaque tape (like duct tape or electrician’s tape) to prevent communication with other devices during the test.

• Calculators with Power Cords: Power cords must be removed from calculators. Only battery-operated calculators are allowed, and bringing a calculator with a power cord could lead to disqualification.

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Which are the ACT Calculators You Cannot Use? 

There are several types of calculators that are not allowed during the ACT due to their advanced functionalities or the potential for misuse. These include calculators with built-in computer algebra systems (CAS) and those that can connect to external devices. Calculators with built-in Computer Algebra System (CAS) capabilities are strictly prohibited because they can perform advanced symbolic operations.

• Texas Instruments models that are prohibited:
  • TI-89
  • TI-92
  • TI-Nspire CAS (Only CAS model; TI-Nspire (non-CAS models) are allowed)
     
• Texas Instruments models that are allowed:
  • TI-30 (all models like TI-30Xa, TI-30XS MultiView)
  • TI-34 (like TI-34 MultiView)
  • TI-36X Pro
  • TI-73 Explorer
  • TI-82
  • TI-83 Plus
  • TI-84 Plus, TI-84 Plus CE
  • TI-Nspire (non-CAS only; both Clickpad and Touchpad versions)
     
• Hewlett-Packard models that are prohibited:
  • HP Prime
  • HP 48GII
  • HP 40G
  • HP 49G
  • HP 50G
     
• Casio models that are prohibited:
  • fx-CP400 (ClassPad 400)
  • ClassPad 300
  • ClassPad 330
  • Algebra fx 2.0
     
• Other prohibited devices:

• Handheld, tablet, or laptop computers (including PDAs)
• Electronic writing pads or pen-input devices
• Calculators built into cell phones or other electronic communication devices
• Calculators with QWERTY keyboards (calculators with letter keys in ABC format are allowed)

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Calculators in a Computer-based Testing Environment

If you are taking the ACT in a computer-based format, you may have access to an on-screen calculator. However, this calculator must not be connected in any way to the computer or testing device. Always check with your test coordinator to confirm the availability of on-screen calculators and ensure that your device meets the required guidelines.

ACT Exam Day Calculator Tips

To make sure you're properly prepared to utilize your calculator wisely on ACT test day, take note of these critical tips:

• ✅ Check Your Calculator: On test day beforehand, ensure your calculator is listed as approved by the ACT. Certain models, particularly those that have Computer Algebra Systems (CAS), are disallowed. In case you're not certain whether your calculator meets the standards, check the official ACT Calculator Policy or seek guidance from ACT's resources to avert disappointment on test day.
• ✅ Test Your Calculator: Make sure your calculator is fully functional, has fresh batteries, and is operating correctly. Testing staff will not supply calculators, batteries, or technical support if your device fails. It's your responsibility to ensure your calculator is in working order.
• ✅ Bring a Backup: Always bring a spare calculator and batteries if available. If your main calculator fails on the test day, you'll be permitted to use your backup, but only if you bring one along. Staff won't have spares.
• ✅ Use Your Calculator Strategically: Keep in mind that any math problem on the ACT can be done without a calculator. Keep time by doing mental math or scratch work on easier problems, and leave calculator usage for harder calculations where it can really assist you.
• ✅ Be Familiar with the Calculator Rules: Your calculator should not produce any noise, include paper tape, or need electrical outlets. It should also not include wireless communication. If your calculator violates these rules, you will not be permitted to use it.
• ✅ Practice With Your Calculator In Advance: Practice is everything. Practice working on ACT-type questions with the calculator you plan to bring, so you feel at ease switching between calculator and mental math.

What Testing Staff Is Responsible For?

Test staff are not required to provide or trouble-shoot calculators during testing. ACT official policies state:

• Staff will scan calculators at the start of the math section to verify compliance with ACT regulations.
• If a calculator is determined to be forbidden, modified, or used inappropriately, staff can seize the calculator, and the student may be sent home and have their test invalidated.
• Staff will not give calculators, batteries, or technical assistance under any condition.
• Students are accountable for their own calculators and for understanding and adhering to the ACT calculator policy.
• Staff is required to report any use of a prohibited calculator or violation to ACT for investigation.

Final Thoughts

The ACT calculator policy is designed to ensure that all students have an equal opportunity to demonstrate their skills. By following the guidelines on approved calculators and modifications, you can be confident in your ability to perform well in the math section of the test. Make sure to choose the calculator that works best for you and practice using it beforehand. With careful preparation, you'll be ready to tackle the math section and excel on the ACT.