Ms Goh's answer to Blur blur sotong's Primary 5 Maths Fractions Singapore question.
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Drawing a model helps to solve this question.
Wei Ling saved 1/2 of her allowance and so her allowance is split into 2 equal parts. Of the remaining 1/2, 2 out of 5 was spent. Hence we divide the remaining into 5 equal parts and shade 2 parts to represent the units spent. 3 units are left and this is equals to $51. After finding that 1 unit is $17, we proceed to find the allowance at first which should be twice the remainder (5u). So we find 5u = 5 x 17 and then we double it to find the allowance.
Hope this helps!
Wei Ling saved 1/2 of her allowance and so her allowance is split into 2 equal parts. Of the remaining 1/2, 2 out of 5 was spent. Hence we divide the remaining into 5 equal parts and shade 2 parts to represent the units spent. 3 units are left and this is equals to $51. After finding that 1 unit is $17, we proceed to find the allowance at first which should be twice the remainder (5u). So we find 5u = 5 x 17 and then we double it to find the allowance.
Hope this helps!
Date Posted:
1 year ago
Thank you!
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