Prepare for your EEI CAST test
Practice drawing arithmetic, mechanics, reading and math. Build the skills in short drills, then take the CAST or CAST-R aptitude test that matches your invitation.
View your results and progress10 short drills · 2 aptitude formats · Explained answers
What is the area of this work pad?
Use the printed dimensions. The upper-right corner is missing.
Original teaching example. Dimensions in feet; do not measure the picture.
Start with the enclosing rectangle
14 × 10 = 140 ft²
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Choose a short practice drill
Focus on one skill without a countdown. Drawing and reading drills keep the same source visible for a set of eight questions. Mathematical Usage is part of original CAST.
Drawing dimensions
Read dimension lines, find missing lengths and distinguish edges from centerlines.
Drawing areas
Calculate areas and compare parts of a dimensioned plan.
Forces and motion
Reason about loads, balance, friction and changes in motion.
Machines and mechanisms
Follow gears, pulleys, belts and simple mechanical relationships.
Fluids and heat
Compare pressure, flow and basic heat-transfer situations.
Electricity
Read simple circuit diagrams and relate voltage, current and resistance.
Finding evidence
Locate facts and draw supported conclusions from technical passages.
Following procedures
Track the order, conditions and exceptions in written instructions.
Conversions
Apply a supplied reference to convert lengths, quantities and rates. Original CAST section.
Calculations
Use supplied mathematical information accurately under a short clock. Original CAST section.
Choose the version in your invitation
CAST-R has three aptitude sections plus a separate Work Preferences Inventory. Original CAST has four aptitude sections. Each timed practice uses separate section clocks and shows feedback at the end.
CAST-R aptitude practice
Practice the three revised aptitude sections: graphic arithmetic, mechanical concepts and reading. Work Preferences orientation is available separately.
Original CAST full practice
Practice all four original aptitude sections, including the short Mathematical Usage section.
The 80-minute CAST-R practice covers aptitude only. Try the free Work Preferences orientation for the separate inventory.
Practice one timed section
Work on completing one subject within its published section limit. Answers stay hidden until your selected test ends.
Graphic arithmetic test
Read two original drawings and answer eight questions about each.
Mechanical concepts test
Work through 44 illustrated questions about forces, mechanisms, fluids, heat and circuits.
Reading for comprehension test
Read four original technical passages and answer eight questions about each.
Mathematical usage test
Apply a supplied mathematical reference under the original CAST section’s seven-minute clock.
One EEI CAST / CAST-R pass covers both aptitude formats, all four subject tests and every drill replay. If your account includes free first attempts, you can try each short drill once.
Learn the method behind the answer
Review the drawings, passages, calculations and mechanical reasoning behind your answers. Use your section results to decide what to practice next.
Read the CAST study guideUnderstand Work Preferences
If your invitation includes the CAST-R inventory, get familiar with agreement ratings and honest reflection. The examples are free and do not score your personality.
Try the rating examplesTry a drawing question
Calculate from the labeled measurements, then check the explanation. This original example is free without an account.
What is the area of this work pad?
Use the printed dimensions. The upper-right corner is missing.
Original teaching example. Dimensions in feet; do not measure the picture.
Preparing for a utility employer?
These employers publish CAST preparation guidance. The role and invitation determine the actual test.
Southern Company
Its hiring guidance names CAST-R and links revised preparation resources, with Work Preferences covered separately.
Read employer guidanceAmeren apprenticeships
Its Illinois and Missouri apprenticeship guidance explicitly names CAST-R for relevant skilled-craft routes.
Read employer guidancePSEG skilled trades
Its preparation page maps CAST to several skilled-trade roles. Check your invitation before choosing a version.
Read employer guidanceCommon questions
What is the difference between CAST and CAST-R?
Original CAST has graphic arithmetic, mechanical concepts, reading comprehension and mathematical usage: 110 aptitude questions across 87 minutes of section time. CAST-R retains the first three aptitude sections and replaces mathematical usage with a Work Preferences Inventory. Its aptitude sections total 92 questions and 80 minutes; the separate inventory has 105 responses and a 30-minute allowance.
Which version should I practice?
Use the version and section names in your employer’s invitation. Choose CAST-R aptitude practice for graphic arithmetic, mechanical concepts and reading. Choose original CAST full practice if mathematical usage is also required. If your invitation simply says CAST, check its preparation guide before assuming a version.
Is the CAST-R practice the complete revised assessment?
The timed CAST-R practice here covers the three aptitude sections: 92 questions in 80 minutes. The Work Preferences Inventory is separate. We provide free, unscored work-preference examples to explain the response task, without inventing a personality answer key or fit score.
Can I use a calculator?
EEI’s current original CAST brochure permits a calculator in Graphic Arithmetic and Mathematical Usage. The CAST-R guide also permits one in Graphic Arithmetic. Our practice includes a calculator in the graphic and mathematical sections and their drills. Follow your employer’s instructions for the actual calculator model and setup.
Which practice attempts are free?
If your account includes free first attempts, you can try each short drill once. One EEI CAST / CAST-R pass covers both longer aptitude forms, all four subject tests and every drill replay. Some accounts require a pass before scored practice. The public example, study guide and work-preferences orientation are free.
When do I see answers and explanations?
In mechanical and mathematical drills, check an answer to reveal its explanation. Drawing and reading drills share one source across eight questions, so their explanations appear after the whole set. In every timed test, results and explanations stay hidden until the selected test ends.
Can I change an answer during timed practice?
You can review, flag and change answers within the current section before it ends. Once you finish a section or its clock expires, you cannot return to it. Each section has its own limit, and unused time does not carry forward. These are our practice controls; your actual assessment may use different navigation.
What score do I need to pass?
Employers set their requirements. EEI describes an index from 1 to 10, but the public guides do not publish a conversion we can apply to original practice questions. Our results show accuracy, section performance and improvement. They do not predict an official score, employer cutoff or hiring outcome.
Do I need to book a test through EEI?
EEI says employers administer its employment tests and provide results. Follow the application and testing instructions from your employer. This site provides independent preparation, not official test registration or a testing certificate.
Original independent preparation. Not affiliated with or endorsed by EEI or the employers named. Practice scores are not official CAST index scores or hiring predictions.