CSE Sub-Pro Numerical Ability Review
CSE Sub-Pro Numerical Ability Review
Numerical Ability is one of the four areas of the CSE Subprofessional. The CSC doesn't break it down further for Sub-Pro or say how many items it has. For the Professional level it lists basic operations, number sequence and word problems, and that's a sensible guide to what to practice here too. Calculators are banned, so everything is by hand.
Basic operations
- Order of operations
- Fractions, decimals and percentages, and converting between them
- Mental math: squares up to 15 × 15, multiplication facts, quick estimates
- Divisibility rules
Percentages and ratios
- Percentage of a number; percentage increase and decrease
- Discounts, simple interest and commissions
- Ratio simplification and proportions
Number sequences
Find the rule by looking at the differences between terms:
- Constant difference or constant ratio
- Differences of differences
- Two patterns alternating
- Squares, cubes and other step patterns
Word problems
Common types: age, work, mixture, distance-rate-time, and money problems. Read the whole problem, write down what's being asked, set up the equation, then solve. Check your answer against the question before moving on.
A 3-week Numerical drilling plan
| Week | Focus | Volume target |
|---|---|---|
| 1 | Operations, fractions, percentages | 80 items |
| 2 | Word problems | 60 items |
| 3 | Number sequences + one full practice test | 1 practice test + 40 items |
Do a short set every day rather than one long weekend session. Practice without a calculator from day one.
Where Super Tutor fits
Super Tutor's CSE Subprofessional reviewer covers Numerical Ability with lessons and practice quizzes at three difficulty levels, and the AI tutor walks through any problem step by step. Start free — 5-day trial, no card.
What to read next
The CSE Subprofessional guide covers the full exam.
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