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Arithmetic Index (RAI) – Gr. 12 Version

THIS ASSESSMENT IS NOT CURRENTLY AVAILABLE – Measures basic grade level competency of math skills. Grade 8 and 12 versions available.

SKU: 40 Category:


What does it do and what problem does it solve?

This assessment is a measure of arithmetic ability matched to an approximate US grade level equivalency score.  It was originally designed for use in industrial settings.  Use it to assess an applicant’s current mathematical abilities for entry-level positions, for suitability for entry into post-secondary education venues or to determine where to begin remedial instruction.  Use the Search function (upper right) to find similar tests including the “Industrial Reading Test”.


Special Announcement

This applies to ONLY  the Grade 12 Versions of these assessments.  The Reading Gr. 9 and Arithmetic Gr. 8 are available online.

We regret to announce that as of February 2019 the publisher of this product has temporarily  discontinued it in paper.  Until further notice it is no longer available for purchase.   We’re anticipating its return in early 2020 (in an online format).  We apologize for the inconvenience that this creates for current users.  We will be glad to help you select an alternate product in the meantime – if a suitable substitute exists.  Please contact us for recommendations.


The Reading-Arithmetic Inventory (RAI) is a (formerly) paper-and-pencil inventory that measures the job applicant’s level of development in reading and/or math computation. As with any selection tool, the RAI should be used in conjunction with other pre-employment screening procedures such as interviews and reference checks.

The Reading-Arithmetic Inventory measures applicants on the following scales:

Reading Index

• Picture-word association
• Word decoding
• Comprehension of phrases
• Comprehension of sentences
• Comprehension of paragraphs

Arithmetic Index

• Addition and subtraction of whole numbers
• Multiplication and division of whole numbers
• Basic operations involving fractions
• Basic operations involving decimals and percentages

The Reading Index, contains 60 items that test applicant’s ability to read and understand basic materials through to grade nine.

The Arithmetic Index, contains 54 items that test ability to add, subtract, multiply, divide and use fractions, decimals and percentages to grade 8.

If a higher grade-level determination is required, the test was formerly available in another version which tests to the grade 12 level.  The Grade 12 Versions have been temporarily suspended and are no longer available for purchase.  We hope that they will soon be available in an online format but they are not as of yet.  They included 72 items on the reading scale (adding -phrases, sentences and paragraphs) and 70 on the mathematics scale (adding – square roots, powers, geometry and word problems).  The tests have been validated for accuracy against the following occupations:

The tests have been validated for accuracy against the following occupations:

Reading Index

• Assembler
• Carpenter
• Electrician
• Freight car repairer
• Heavy equipment operator
• Machinist
• Salesperson-driver/route person
• Telegrapher
• Warehouse/materials
• Yard clerk

Arithmetic Index

• Claims auditor
• Electrician
• Keypunch operator
• Maintenance mechanic
• Telephone service representative
• Warehouse/materials handler
• Plumber
• Telegrapher
• Yard clerk


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Additional information

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