ICAS Cheat Sheet 2026

The 30 highest-yield ICAS facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Which word is correctly formed by adding '-ly' to 'probable'? → probably
2. Which data type would BEST store the value 3.14159? → Float (decimal)
3. A flashlight beam appears to travel in a straight line. This property of light is called: → Rectilinear propagation
4. Which of the following words is a proper noun? → London
5. A rectangle has a length of 12 cm and a width of 7 cm. What is its perimeter? → 38 cm
6. What is the main source of energy for Earth? → Sun
7. What is the greatest common factor (GCF) of 48 and 72? → 24
8. What is a function in programming? → A reusable block of code that performs a specific task
9. Which sentence uses 'its' (without apostrophe) correctly? → The cat licked its paw very carefully.
10. Which sentence is written in the passive voice? → The report was written by Sarah.
11. Which word is formed correctly by adding '-ness' to 'happy'? → happiness
12. What is the value of 3² + 4²? → 25
13. Which sentence uses the most effective persuasive language? → Every household must commit to recycling to protect our planet's future.
14. Which word is a proper noun? → London
15. Which of the following converts a high-level programming language into machine code before running? → Compiler
16. Which sentence contains a correctly spelled word? → He wore a woolen sweater.
17. What is the output of: 5 + 3 * 2 in most programming languages? → 11
18. What does the term 'algorithm' refer to in digital technology? → A step-by-step process
19. In a digital computing context, what is the primary reason for using the binary system (base-2) to represent data? → It directly corresponds to the two-state (on/off) nature of electronic circuits.
20. Which correctly spells the past tense of 'carry'? → carried
21. Which of the following best describes the Internet? → A global network of interconnected computers
22. Which sentence uses a simile? → They were studying
23. The cost to rent a bicycle is $3 per hour plus a $5 flat fee. If Maria paid $20, how many hours did she rent the bicycle? → 5
24. Which force pulls objects toward the Earth? → Gravity
25. Which network topology connects all devices in a single continuous ring? → Ring topology
26. In which sentence is the apostrophe used correctly to show plural possession? → The students' projects were all displayed in the hall.
27. What is the primary purpose of a 'call to action' at the end of a persuasive text? → To tell the reader what specific action they should take next.
28. What is the term for the boundary where two tectonic plates move apart from each other? → Divergent boundary
29. Which word is correctly spelled? → definite
30. What does 'resolution' refer to when describing a digital image? → The number of pixels in the image