![]() , 36 12 24 (age difference remains unchanged) 4 24 1 unit 6 Mrs age when her daughter was 6 years 6 Number of years ago 36 30 6 years ago x 5 30 Method 2: Now Before Mrs Robert 36 3 5 5x 6 30 Number of years ago Daughter 12 1 1 1 X 6 6 Difference 24 2 4 4x 6 24 36 30 6 years ago RAFFLES PRIMARY SCHOOL MATHEMATICS PRIMARY 6 Date: Name: Class: Topic: Whole Numbers Key Concept: More than with internal transfer Example: The number of marbles in container A was 36 more than that in container B. How many years ago was Mrs Robert five times as old as her daughter? Method 1: Mrs Robert Daughter i., r_ Difference in age. ![]() ![]() Preview text 2015 PSLE Mathematics Notes (RGPS) Topics 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) Whole Number Algebra Fraction Percentage Ratio Speed Circles Supposition or Assumption Method Excess and Shortage Geometry Tessellation Nets of Cube CHOOL S RY A IM R P S L IR G RAFFLES MATHEMATICS PRIMARY 6 Name: Date: Class: Key Concept: Constant difference Topic: Whole Numbers Example: Mrs Robert is 36 years old and her daughter is 24 years younger. 2829180 B - Lutein is a type of organic pigment called a carotenoid.
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