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i-Excel Heuristics and Model Approach Primary 4

Part I   Heuristic Approach
  Unit 1    Guess And Check
  Unit 2    Simplify The Problem
  Unit 3    Work Backwards
  Unit 4    Look For Pattern
  Unit 5    Draw A Diagram
  Unit 6    Make A List
  Unit 7    Test 1
  Unit 8    *Challenge Yourself 1
  Answer key 1
 
Part II   Model Approach - Whole Numbers
  Unit 9    Addition and Subtraction
  Unit 10  Addition and Subtraction
  Unit 11  Addition and Subtraction
  Unit 12  Multiplication and Division
  Unit 13  Multiplication and Division
  Unit 14  Four Operations
  Unit 15  Four Operations
  Unit 16  Four Operations
  Unit 17  Four Operations
  Unit 18  Four Operations
  Unit 19  Four Operations
  Unit 20  Four Operations
  Unit 21  Test 2
  Unit 22  Test 3
  Unit 23  *Challenge Yourself 2
  Answer key 2

Part III   Model Approach - Fractions
  Unit 24  Addition and Subtraction
  Unit 25  Addition and Subtraction
  Unit 26  Multiplication and Division
  Unit 27  Multiplication and Division
  Unit 28  Multiplication and Division
  Unit 29  Multiplication and Division
  Unit 30  Multiplication and Division
  Unit 31  Multiplication and Division
  Unit 32  Four Operations
  Unit 33  Four Operations
  Unit 34  Test 4
  Unit 35  Test 5
  Unit 36  *Challenge Yourself 3
  Answer key 3

Part VII   Non-Routine Problems
  Unit 37  *Challenge Yourself 4
  Answer key 4