The Praxis 7813: Elementary Education – Mathematics CKT subtest measures the specialized mathematical knowledge needed to teach elementary mathematics effectively. CKT stands for “Content Knowledge for Teaching,” meaning the exam focuses on how teachers use math knowledge in instructional settings, not just how well they can solve problems.

The test assesses both foundational math content and the ability to analyze student thinking, identify misconceptions, and select appropriate instructional strategies. It is computer-delivered and includes selected-response and numeric-entry questions. An on-screen four-function calculator is provided.

Because the calculator interface may feel different from a handheld model, you are strongly encouraged to practice using the official version before test day. You can access the practice calculator here. 

Most states require a scaled score between 150 and 160, but requirements differ depending on your state’s certification standards. Praxis scores are reported as scaled scores. A scaled score adjusts for slight differences in difficulty between test versions, ensuring fairness across administrations. Because of this scaling process, the number of questions you answer correctly does not directly equal your final reported score.

Always check your state’s Department of Education website to confirm the exact passing score you need. You can access information on passing scores by state on the ETS website.

Many candidates find the Praxis 7813 challenging because it measures teaching-specific mathematical knowledge. Questions often require interpreting student errors, choosing instructional examples, or applying math concepts in classroom scenarios.

With focused review of elementary math content and practice applying that knowledge to teaching situations, the exam is very manageable.

The Praxis 7813 includes:

• 52 total questions
• 85 minutes of testing time
• Selected-response and numeric-entry format
• An on-screen four-function calculator provided

This subtest is separately timed and is part of the Elementary Education: Content Knowledge for Teaching (7811) series.