PSLE math ratio made easy | PSLE revision series (3/5)

Описание: How fast can you solve PSLE math ratio word problems?

Try out this Primary 6 ratio question from a school prelim math exam paper and learn a useful shortcut to solving such ratio problems the next time you see them!

Here’s the question that we’ll be covering:
"Ben, Jimmy and Sam each had some marbles. They each used the same number of marbles in a game. Ben used 1/3 of his marbles, Jimmy used 7/8 of his marbles and Sam used 3/4 of his marbles. What was the ratio of the number of marbles Ben had at first to the number of marbles Jimmy had at first to the number of marbles Jimmy had at first?"

0:00 Introduction
0:40 Understanding this ratio problem with the Singapore bar model method - turning fractions into ratio
3:38 Common mistake Primary 6 kids make
4:19 A shortcut to solving this problem
6:01 Solving a new ratio problem

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