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Mathematics
6 sections available · 134 chapters available
Free Mathematics revision notes for Primary School students. Each chapter covers a key topic with worked examples and practice prompts you can take straight into the thinka app.
P1
Numbers to 20
Numbers to 100
Odd and Even numbers, Counting onwards & backwards
Addition (One digit)
Addition (Two digits)
Subtraction (One digit)
Subtraction (Two digits)
Addition and Subtraction (One digit)
2-D/3-D shapes
Addition and Subtraction (Two digits)
Money (Basic)
Directions and positions (Up, Down, Left, Right, Front, Back)
2-D shapes (Triangles, quadrilaterals, pentagons, hexagons and circles)
3-D shapes (Prisms, cylinders, pyramids, cones and spheres)
Time (Time, Week, Month, Year)
Length and distance (cm)
Directions and positions (“over”, “under”, “left”, “right”, “in front of”, “behind” and “between”)
Money (The coins in circulation in Hong Kong)
P2
3-digit numbers (Basic Concepts)
4-digit numbers (Basic Concepts)
Addition (Three digits)
Subtraction (Three digits)
Addition (Multiple digits)
Subtraction (Multiple digits)
Mixed addition and subtraction (Multiple digits)
Mixed addition and subtraction (Three digits)
Multiplication (One digit)
Division (One digit)
Multiplication (Two digits)
Angles (Comparsion of the sizes)
Angle (Right angle and Vertical line, Acute angle and Obtuse angle)
Division (Two digits)
Quadrilateral (Square, Rectangle, Parallelogram, Trapezoid, Rhombus)
Directions and positions (East, South, West, North)
Length and Distance (mm/cm/m/km)
Triangles (Understanding Right-angled triangles, Isosceles triangles, Equilateral triangles, Isosceles right-angled triangles and Unequal triangles)
Time (min, time intervals)
Time (a.m., p.m., morning, afternoon, noon and midnight)
Money (Advanced)
Time (Number of days in each month, common year, leap year)
Money (The notes in circulation in Hong Kong)
3-D shapes (Faces, names of different prisms and pyramids)
Pictograms
P3
5-digit numbers (Basic Concepts)
Mixed addition and subtraction (Multiple digits)
Multiplication (Two digits)
Multiplication (Three digits)
Division (Two digits)
Division (Three digits)
Four arithmetic operations (Multiple digits)
Four arithmetic operations (Three digits)
Money (Advanced)
Four arithmetic operations (Four digits)
Fractions (Basic concepts)
Weight (g/kg)
Capacity (mL/L)
Triangles (Right-angled, Isosceles, Equilateral, Isosceles right-angled and Unequal triangles)
Time (Advanced)
Quadrilaterals (parallel lines/parallelograms)
Quadrilaterals (trapeziums)
Time (second, time intervals)
Length and distance (km/mm)
Time (24-hour time)
Bar Graph
P4
Prime number, Composite number, Multiples, Factors
Common multiples and Common factors
The least common multiple and the highest common factor (L.C.M, H.C.F.)
Division (Mulitple digits)
Multiplication (Mulitple digits)
Four arithmetic operations (Multiple digits)
Fractions (Proper fractions, Improper fractions and Mixed numbers)
Fractions (Addition, Fractions with same denominators)
Fractions (Subtraction, Fractions with same denominators)
Decimals (Addition & Subtraction)
Fractions (Mixed operations of addition and subtraction, Fractions with same denominators)
Decimals (Basic Concepts)
Decimals (Addition)
Decimals (Subtraction)
Area (Square, Rectangle, Triangle)
Decimals (Mixed operations of addition and subtraction)
Perimeter (Squares and Rectangles)
Area (square centimetre and square metre)
Area (Sqaures and rectangles)
Quadrilaterals (Rhombuses)
Dissecting and forming shapes
Directions and positions (southeast, northeast, southwest and northwest)
Bar charts (Horizontal and vertical forms, approximate values )
P5
Fractions (Additions, Fractions with different denominators)
Fractions (Subtraction, Fractions with different denominators)
Fractions (Mixed operations of addition and subtraction, Fractions with different denominators)
Fractions (Multiplication)
3-D shapes (Cross-sections, Vertices, Edges)
Fractions (Division)
Fractions (Mixed arithmetic operations)
Volume (Prism, Pyramid)
Decimals (Multiplication)
Decimals (Division)
Percentages (Percentages, decimals and fractions)
Elementary algebra
Simple equations (Basic)
Simple equations (Basic Concepts)
Area (Parallelograms, Trapeziums, Polygons)
Volume (Cubes and cuboids)
Circles (Basic properties)
Spheres (Basic properties)
3-D shapes (Cross sections of prisms and cylinders)
3-D shapes (Vertices and edges)
Bar graph (Compound bar charts )
Bar charts (Compound bar charts in horizontal and vertical forms)
P6
Decimals (Division)
Decimals (Interconversion between a decimal and a fraction)
Decimals (Mixed arithmetic operations)
Speed
Percentages (Interconversion between a percentage and a decimal and a fraction)
Percentages (Solving problems)
Simple equations (involving non-integral coefficients or constants)
Simple equations (Solving problems)
Circles, Cones, Cylinders (Perimeter, Area, Volume)
Line graph, Pie chart
Averages
Perimeter (pi)
Perimeter (pi, formula for circumference)
Volume (Cone, Cylinder)
Angle (degree)
Area (Circles)
Area (Sector)
Volume (Water displacement method, Irregular solids)
Speed (Interconversion between units of time)
Speed (Solving problems)
Speed (metres per second (m/s) and kilometres per hour (km/h))
Symmetry (2-D shapes having axial symmetry)
Broken line graphs
Pie charts
Uses and abuses of statistics
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