Use of Calculators on the CAAP Mathematics Test

ACT permits examinees to use a calculator on the CAAP Mathematics Test, but not on any of the other tests. However, all problems on the test can be solved without using a calculator. You may use any four-function, scientific, or graphing calculator, unless it has features described in the Prohibited Calculators list.

Examinees are responsible for ensuring their calculators are permitted.

Prohibited Calculators

The following types of devices are prohibited:

  • handheld, tablet, or laptop computers, including PDAs.
  • electronic writing pads or pen-input devices—Note: The Sharp EL 9600 is permitted.
  • calculators built into cell phones or any other electronic communication devices.
  • calculators with a typewriter keypad (letter keys in QWERTY format)—Calculators with letter keys not in QWERTY format are permitted.
  • calculators with built-in computer algebra systems—Prohibited calculators in this category include:
    • Casio: Algebra fx 2.0, ClassPad 300 or ClassPad 330, and all model numbers that begin with CFX-9970G.
    • Texas Instruments: all model numbers that begin with TI-89 or TI-92; and the TI-Nspire CAS.
      Note: The TI-Nspire (non-CAS) is permitted.
    • Hewlett-Packard: HP 48GII and all model numbers that begin with HP 40G, HP 49G, or HP 50G.

ACT monitors new calculators as they become available. Call toll free 800.498.6481 for a recorded message about the latest list of prohibited calculators.

Calculators Permitted with Modification

The following types of calculators are permitted, but only if they are modified as noted:

  • calculators with paper tape—Remove the tape.
  • calculators that make noise—Turn off the sound.
  • calculators with an infrared data port—Completely cover the infrared data port with heavy opaque material such as duct tape or electrician’s tape.
  • calculators that have power cords—Remove all power/electrical cords.

Some calculators may have mathematical formulas printed on the calculator itself; these calculators are permitted. Likewise, some calculators come with preprinted instructions for the use of the calculator that are inserted into the calculator cover and carried with it; these instructions do not need to be removed.

Examinees must not share calculators. No examinee may use more than one calculator at a time.

Examples of Permitted Calculators

Scientific or graphing



Examples of Prohibited Calculators

QWERTY keyboard

Paper tape