Chapter 1
Simplification and Approximation
Applying BODMAS for multi-operator equations
medium • 1 min read
Square and Cube root shortcuts for speed maths
medium • 2 min read
Percentage to fraction conversion for speed calculation
medium • 3 min read
Rounding off values for approximation methods
medium • 4 min read
Handling multi-variable equations for speed entry
medium • 5 min read
Chapter 2
Number Series
Finding the missing number in a numeric sequence
medium • 1 min read
Identifying the wrong term in a given number series
medium • 2 min read
Pattern analysis for arithmetic/geometric growth
medium • 3 min read
Difference of differences (Two-tier) logic series
medium • 4 min read
Predicting the end-term of a non-linear series
medium • 5 min read
Chapter 3
Quadratic Equations
Finding roots of quadratic equations (X and Y)
medium • 1 min read
Comparison of X and Y roots: Relationship finding
medium • 2 min read
Solving quadratic equations using factorisation
medium • 3 min read
Equations with larger coefficients and shortcuts
medium • 4 min read
Linear vs Quadratic relationship comparisons
medium • 5 min read
Chapter 4
Arithmetic Basics (I)
Ratio, Proportion and variation: Basic relationships
medium • 1 min read
Averages of numbers, age and weight for groups
medium • 2 min read
Percentage: Basic calculation and changes on sum
medium • 3 min read
Partnership: Investment and profit sharing ratio
medium • 4 min read
Mixtures: Ratio of constituents in a solution
medium • 5 min read
Chapter 5
Arithmetic Basics (II)
Simple Interest: Yearly and monthly accumulations
medium • 1 min read
Standard average: Mean of observations and weight
medium • 2 min read
Comparison of ages of multiple family members
medium • 3 min read
Profit and Loss on CP and SP: Basic cases
medium • 4 min read
Identifying the relationship between number sets
medium • 5 min read