Revision: Numbers and Algebra

Cambridge Board > O-Levels Year-4 > Math (Total Videos: 298)

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Chapter 9: Revision: Numbers and Algebra (78 videos)   (Practice Test)
9.1: Numbers and percentages  (Practice Test)
  1. Prime Factorisation
  2. Problem-Prime Factorization
  3. Product Law of Exponents of Rational Numbers
  4. Problem-Product Law of Exponents of Rational Numbers
  5. Quotient Law of Exponents of Rational Numbers
  6. Problem-Quotient Law of Exponents of Rational Numbers
  7. Power Law of Rational Numbers
  8. Problem-Power Law of Rational Numbers
  9. Zero and negative Indices
  10. Problem-Negative Exponent of Rational Numbers
  11. Demonstration of the concept of power of an integer
  12. Applications of Laws of Exponents
  13. Problem-Applying Laws of Exponents to Evaluate Expressions
  14. Concept of Percentage
  15. Problem-Concept of Percentage
  16. Problem on Percentage by Using Unitary Method
  17. Problem on Percentage by Using Proportion
  18. Ordering fractions using percentage
  19. Solve Real Life Problems Involving Percentages
  20. Problem-Solve Real Life Problems Involving Percentages
9.2: Proportion, ratio, rate and speed
  1. Direct Proportion
  2. Speed and Average Speed
  3. Problems Involving Speed and Average Speed
9.3: Algebraic manipulation and formulae  (Practice Test)
  1. Simplification of Algebraic Expressions
  2. Problem-Simplification of Algebraic Expressions
  3. Evaluation of Algebraic Expressions
  4. Problem-Evaluation of Algebraic Expressions
  5. Changing the Subject of a Formula
  6. Further Examples on Changing the Subject of a Formula
  7. Finding an Unknown in a Formula
  8. Number Sequences
  9. Genral Term in a Number Sequence
  10. Problem Solving
9.4: Equations and inequalities  (Practice Test)
  1. Solution of a Linear Equations
  2. Problem-Solution of a Linear Equations
  3. Finding Solution Using Method of Equating the Coefficients
  4. Elimination by Substitution Method
  5. Finding Solution Using Method of Cross Multiplication
  6. Solving Simultaneous Linear Equations -p1
  7. More on Solving Simultaneous Linear Equations -p1
  8. Solving Simultaneous Linear Equations -p2
  9. More on Solving Simultaneous Linear Equations -p2
  10. Problem-Solving Simultaneous Linear Equations -p1
  11. Introduction to Linear Inequalities
  12. Problem 1: Introduction to Linear Inequalities
9.5: Functions and graphs  (Practice Test)
  1. Introduction to Function
  2. More on Introduction to Functions
  3. Problem 1: Introduction to Function
  4. Problem-Introduction to Function
  5. Problem3-Introduction to Function
  6. Problem4-Introduction to Function
  7. Types of Relations
  8. Inverse of a Function
  9. More on Inverse of a Functions
  10. Problem1-Inverse of a Function
  11. Problem-Inverse of a Function
  12. Domain & Range of Inverse Function
  13. Graphical Solution of the Equation
9.6: Graphs in practical situations  (Practice Test)
  1. Speed-Time Graphs
  2. Graphs in Practical Solutions
9.7: Sets  (Practice Test)
  1. Set Definition
  2. Problem-Set Definition
  3. Set Notation & its Characteristics
  4. Problem-Set Notation & its Characteristics
  5. Presentation of a Set
  6. Problem-Presentation of a Set
  7. Problem 1: Presentation of a Set
  8. Set Builder Notation
  9. Problem 1: Set Builder Notation
  10. Introduction to Venn Diagrams
  11. Problem 1: Introduction to Venn Diagrams
9.8: Matrices  (Practice Test)
  1. Addition of Matrices
  2. Problem 1: Addition of Matrices
  3. Subtraction of Matrices
  4. Problem 1: Subtraction of Matrices
  5. Multiplication of Matrix by a Real Number
  6. Problem 1: Multiplication of Matrix by a Real Number
  7. Multiplication of Matrices
  8. More on Multiplication of Matrices
  9. Problem 1: Multiplication of Matrices