psle maths revision notes · 2020. 11. 3. · psle maths revision notes. 2015 psle mathematics...
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PSLE MathsRevision Notes
2015 PSLE Mathematics Revision/Summary Notes
(RGPS)
Topics1) Whole Number2) Algebra3) Fraction4) Percentage5) Ratio6) Speed7) Circles8) Supposition or Assumption Method9) Excess and Shortage10) Geometry11) Tessellation12) Nets of Cube
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RAFFLES GIRLS' PRIMARY SCHOOL
MATHEMATICS
Name: ---Class:
Topic: Whole Numbers
Example:
PRIMARY 6
Date: ______ _
Key Concept: Constant difference
Mrs Robert is 36 years old and her daughter is 24 years younger. How many years ago was Mrs Robert five times as old as her daughter?
Method 1:
Mrs Robert
Daughter ,...__ __ -JI i., ____A_g_e_d-iff_e
_r-en
_c_e ______.,
Difference in age -+ 36 - 12 = 24 (age difference remains unchanged)
4 units-+ 24 1 unit -+ 6
Mrs Robert's age when her daughter was 6 years old-+ 6 x 5 = 30 Number of years ago --. 36 - 30 = 6 years ago
Method 2:
Mrs Robert Daughter Difference 36 12 24
Now 3 1 2
Before 5 1 4 5x6 1 X 6 4x6 30 6 24
Number of years ago -+ 36 - 30 = 6 years ago
Ans:§
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