SSC CHSL Tier I — Learning Prototype D: all subjects of this examStart: Per hundred: find the part, the percent or the whole
SSC CHSL Tier I — Learning Prototype D · Tier I · Part III
Quantitative Aptitude (Basic Arithmetic Skill)
Part III of Tier I: 25 questions, 50 marks, 15 minutes (SSC CHSL 2026 notice, para 13.8). Lessons in this prototype: Percentages, one course of 12 bilingual lessons in four levels, a five-question practice set after each lesson, and two ten-question mini mocks.
- 25 questions
- 50 marks
- 15-minute section timer
- Higher Secondary (10+2) level
Percentages: 12 lessons, 12 practice sets and 2 mini mocks.
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Percentages
Percentages in SSC CHSL Part III ("Fundamental arithmetical operations", notice para 13.10.3), taught as one course of 12 bilingual lessons in four levels: what a percent means, percent in your head, seeing it as a picture, and the exam hall. One idea runs through all of them: a percent is a multiplier.
- Per hundred: find the part, the percent or the whole14 minFree
- Up, down and back: change is measured on the old value15 minFree
- Changes in a row multiply; points are not percent15 minFree
- Build any percent from 10%, 5% and 1% blocks13 minFree
- Which number is the base? More than and less than14 minFree
- Longer chains, and percentage points in the news15 minFree
- Ten blocks on a bar: percents as fractions14 minFree
- Before and after bars: change as a fraction14 minFree
- The 100-grid: chains of changes and points in squares15 minFree
- The 36-second budget: when to round and when to work exactly15 minFree
- Cross out first: size, units and multiplying back14 minFree
- Negative marking: your score, and when a guess pays14 minFree