Mathematics
Form 1 · 35 topics available
Chapter 1 · Rational Numbers
Integers
Integers are whole numbers that can be positive, negative or zero. Learn to read, compare and order them on a number line.
OpenBasic Arithmetic Operations Involving Integers
Add, subtract, multiply and divide positive and negative integers using clear sign rules and order of operations.
OpenPositive and Negative Fractions
Compare, add, subtract, multiply and divide positive and negative fractions using common denominators and sign rules.
OpenPositive and Negative Decimals
Order and compute with positive and negative decimals using place value, alignment and the integer sign rules.
OpenRational Numbers
A rational number can be written as a fraction of two integers. Combine integers, fractions and decimals with confidence.
OpenChapter 2 · Factors and Multiples
Factors, Prime Factors and Highest Common Factor (HCF)
Find factors and prime factors of a number, then use them to work out the highest common factor of two numbers.
OpenMultiples, Common Multiples and Lowest Common Multiple (LCM)
List multiples, spot common multiples of two numbers, and find their lowest common multiple for real problems.
OpenChapter 3 · Squares, Square Roots, Cubes and Cube Roots
Chapter 4 · Ratio, Rates and Proportion
Ratios
Understand what a ratio means, how to write it, simplify it, and share a quantity in a given ratio.
OpenRates
Learn what a rate is, how it differs from a ratio, and how to work out speed, price and unit rates.
OpenProportions
See how a proportion states two equal ratios, and solve for an unknown using cross-multiplication.
OpenRatios, Rates and Proportions
Bring together ratios, rates and proportions to solve everyday problems in one clear method.
OpenRelationship between Ratios, Rates and Proportions with Percentages, Fractions and Decimals
Convert between ratios, fractions, decimals and percentages, and use them to solve proportion problems.
OpenChapter 5 · Algebraic Expressions
Variables and Algebraic Expressions
Learn how letters stand for unknown numbers, and how terms, coefficients and expressions are built.
OpenAlgebraic Expressions Involving Basic Arithmetic Operations
Add, subtract, multiply and divide algebraic terms by combining like terms and using the rules of signs.
OpenChapter 6 · Linear Equations
Linear Equations in One Variable
Solve equations with one unknown by doing the same operation to both sides to keep the balance.
OpenLinear Equations in Two Variables
Understand equations with two unknowns, find pairs of values that satisfy them, and read them from a table.
OpenSimultaneous Linear Equations in Two Variables
Solve two equations together to find the single pair (x, y) that satisfies both, using substitution and elimination.
OpenChapter 7 · Linear Inequalities
Chapter 8 · Lines and Angles
Lines and Angles
Name the basic types of angles and use the straight-line (180°) and full-turn (360°) rules to find unknown angles.
OpenAngles Related to Intersecting Lines
When two lines cross, vertically opposite angles are equal and adjacent angles on a line add to 180°.
OpenAngles Related to Parallel Lines and Transversals
When a transversal cuts parallel lines, corresponding and alternate angles are equal, and interior angles add to 180°.
OpenChapter 9 · Basic Polygons
Polygons
Learn what a polygon is, name polygons by their sides, and use the sum of interior angles (n − 2) × 180°.
OpenInterior and Exterior Angles of Triangles
The interior angles of a triangle add to 180°, and an exterior angle equals the sum of the two opposite interior angles.
OpenInterior and Exterior Angles of Quadrilaterals
The interior angles of a quadrilateral add to 360°, and its four exterior angles also add to 360°.
OpenChapter 10 · Perimeter and Area
Perimeter
Perimeter is the total distance all the way around the outside of a flat shape. Add up every side.
OpenArea of Triangles, Parallelograms, Kites and Trapeziums
Each of these four shapes has its own area formula. Learn the base, height and diagonals each one needs.
OpenRelationship between Perimeter and Area
Perimeter and area measure different things. Two shapes can share one but differ in the other.
OpenChapter 11 · Introduction to Sets
Chapter 12 · Data Collection, Organisation, Representation and Interpretation
Chapter 13 · The Pythagoras Theorem
Need help with Mathematics? A verified JomKelas tutor can guide you through any topic.
Find a verified tutor