Squares, Cubes & Tables Reference for SSC CGL
Memorising common squares, cubes and fraction conversions saves time in arithmetic, algebra, mensuration and data interpretation.
Revise this table in small chunks, then apply it in timed practice so recall becomes automatic.
Squares from 1 to 30
| n | n^2 |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 9 |
| 4 | 16 |
| 5 | 25 |
| 6 | 36 |
| 7 | 49 |
| 8 | 64 |
| 9 | 81 |
| 10 | 100 |
| 11 | 121 |
| 12 | 144 |
| 13 | 169 |
| 14 | 196 |
| 15 | 225 |
| 16 | 256 |
| 17 | 289 |
| 18 | 324 |
| 19 | 361 |
| 20 | 400 |
| 21 | 441 |
| 22 | 484 |
| 23 | 529 |
| 24 | 576 |
| 25 | 625 |
| 26 | 676 |
| 27 | 729 |
| 28 | 784 |
| 29 | 841 |
| 30 | 900 |
Cubes from 1 to 20
| n | n^3 |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 27 |
| 4 | 64 |
| 5 | 125 |
| 6 | 216 |
| 7 | 343 |
| 8 | 512 |
| 9 | 729 |
| 10 | 1000 |
| 11 | 1331 |
| 12 | 1728 |
| 13 | 2197 |
| 14 | 2744 |
| 15 | 3375 |
| 16 | 4096 |
| 17 | 4913 |
| 18 | 5832 |
| 19 | 6859 |
| 20 | 8000 |
Fraction to percentage conversions
| Fraction | Percentage |
|---|---|
| 1/2 | 50% |
| 1/3 | 33.33% |
| 2/3 | 66.67% |
| 1/4 | 25% |
| 3/4 | 75% |
| 1/5 | 20% |
| 2/5 | 40% |
| 3/5 | 60% |
| 4/5 | 80% |
| 1/6 | 16.67% |
| 1/8 | 12.5% |
| 3/8 | 37.5% |
| 5/8 | 62.5% |
| 7/8 | 87.5% |
| 1/9 | 11.11% |
| 1/10 | 10% |
How to revise
Do not try to memorise everything in one sitting. Revise 1-15, then 16-30, then cubes and conversions. Use ExamRocket practice sets to make these values useful in real questions.
Preparation Use
How this squares, cubes & tables reference guide should change your SSC CGL preparation
Squares, Cubes & Tables Reference for SSC CGL is useful only when it changes your timetable, mock strategy, or revision order. Treat this guide as a decision page: understand the rule or strategy, convert it into a weekly target, and test it through SSC CGL mock tests and PYQ-based practice.
Before you practise
- Note the exact rule, pattern, or strategy that affects your preparation.
- Decide which subject or topic needs practice today.
- Keep official SSC instructions separate from coaching-site assumptions.
During mock analysis
- Check whether your mistakes come from speed, accuracy, or wrong topic priority.
- Compare your section-wise time with the latest exam pattern.
- Revise only the weak areas that repeatedly hurt your score.
After this guide
- Take one free topic test to confirm understanding.
- Add difficult mistakes to revision.
- Attempt a mixed mock so the rule is tested under exam pressure.
Join and turn this guide into practice
ExamRocket connects guides, free mock tests, PYQ-based practice, daily missions, and mistake review. That matters because reading a guide does not improve rank unless it changes what you practise next.
Join free and start practiceFrequently asked questions
- Should I memorise squares up to 30 for SSC CGL?
- Yes. Squares up to 30 and cubes up to 20 are enough for most quick calculations in SSC CGL.
- Why are fraction percentages important?
- They save time in percentage, profit-loss, DI, ratio and approximation questions.
Exam rules can change each cycle. Always confirm the latest details against the official SSC notification at ssc.gov.in.