Think Learn Grow (TLG) Education Centre's answer to Macdaddy's Primary 5 Maths Fractions Singapore question.
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Model is difficult to draw for this question so we will use units instead.
Let Bala's units be 12 at the start as a common denominator for 3 and 4 is 12. Siti will have 12 units + 285.
When Siti spends 1/3, she will spend 1/3 of 12 units and also 1/3 of $285. Therefore she will have 8 units + $190 left.
Bala will have 3 units left and the difference between the amount they have left is $330. By drawing a model for that, we can see that 5 units is $140, so you can then find 12 units.
Let Bala's units be 12 at the start as a common denominator for 3 and 4 is 12. Siti will have 12 units + 285.
When Siti spends 1/3, she will spend 1/3 of 12 units and also 1/3 of $285. Therefore she will have 8 units + $190 left.
Bala will have 3 units left and the difference between the amount they have left is $330. By drawing a model for that, we can see that 5 units is $140, so you can then find 12 units.
Date Posted:
4 years ago
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