Chapter 1

Number Systems

Whole numbers, decimals and fractions

medium • 1 min read

Relationship between numbers and divisibility

medium • 2 min read

LCM and HCF: Methods and applications

medium • 3 min read

Simplification using BODMAS rule

medium • 4 min read

Number series and finding missing terms

medium • 5 min read

Chapter 2

Percentage / Ratio and Average

Percentage: Basic concepts and change

medium • 1 min read

Ratio and Proportion: Scaling and sharing

medium • 2 min read

Average of numbers, weight and age

medium • 3 min read

Partnership: Investment and profit sharing

medium • 4 min read

Mixtures and Alligation problems on quality

medium • 5 min read

Chapter 3

Profit, Loss and Interest

Profit and Loss: Cost price/Selling price

medium • 1 min read

Discount and Successive discount cases

medium • 2 min read

Simple Interest: Formula and yearly gain

medium • 3 min read

Compound Interest: Quarterly/Monthly cases

medium • 4 min read

Installment calculations in loans/SI/CI

medium • 5 min read

Chapter 4

Time, Speed and Work

Time and Work: Efficiency and men-days

medium • 1 min read

Pipes and Cisterns: Tank filling logic

medium • 2 min read

Time and Distance: Speed and overtaking

medium • 3 min read

Trains and Boats/Streams relative speed

medium • 4 min read

Circular track races and clock hands

medium • 5 min read

Chapter 5

Data Interpretation

Bar graphs: Comparing multi-variable data

medium • 1 min read

Pie charts: Sectional percentage analysis

medium • 2 min read

Line graphs: Trend analysis over time

medium • 3 min read

Histogram and frequency distribution

medium • 4 min read

Tabulation of data and finding averages

medium • 5 min read