PSLE Subjects Tips
Selected materials to help your child with
PSLE Preparation and Revision
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P5 Math Problem Sum: Fraction of Quantity of 2 Items that Changed (Before-After)
Learn the shortcut! By turning the fractions into ratio and using the ratio technique to solve, you now have 1 less thing to learn and it's much easier!
An Example Problem:
In a class, there are 2/3 as many boys as there are girls. After 15 boys left the class, the number of boys is only 1/9 that of the girls. What is the total number of students in the class at first