SG
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Primary 6
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Number and Algebra
Help please.Thanks
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4
Aaron Hee
.1 x .3 --> $189
100% --> $6300
6 years ago
BA Poh Ann
6 years ago
Yeo See Yeong
6 years ago
Vivian Ang
Thanks
6 years ago
Susan Lim Yap
Asked 9 years ago
SG
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Primary 3
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Number and Algebra
I just don't get it. Please help. P3 maths.
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14
Lim Soo Ling
6 years ago
Lucie Ng
6 years ago
Susan Lim Yap
Thanks Lucie and Soo ling.
6 years ago
BA Poh Ann
6 years ago
Lucie Ng
OOOps!Saw the picture wrongly :( Mistook the pic of the boy for the girl & vice versa. Blind me! :( So my given answer should be the reverse, i.e. girl = 37, boy = 11 :)
6 years ago
Jayasitra Tangavellu
But y must u divide by 2??cos they nvr said both of them r equal right??
6 years ago
Ingo Steil
37+11=48 and 37-11=26
6 years ago
Soo Vei Li
Susan Lim Yap, your child's drawing of the model in your photo is a correct start. The idea after that is to create equal units. That is why we subtract 26 from the total (48). After subtracting the 'extra' part, we get equal units (equal bars) and then divide 22 by 2. It may help your child if a dotted line is drawn on the longer bar to show where the quantity 26 goes to. The idea of equal units would be more visual.
SG
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Primary 3
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Number and Algebra
Please help with this question ...is there any others way other than guess and check methods. Thanks in advance.
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5
Meng Khim Goh
There must be two assumptions for this question:
1. There is at least one of each animal (parrot/terrapin/spider).
2. We do not count the 4 legs of John and Mary.
Going by the first assumption,
1 parrot + 1 terrapin + 1 spider = total of 12 legs. That leaves 46 legs among 12 animals remaining.
The only combination to have 46 legs among 12 animals is
1 parrot + 11 terrapins.
So there are 2 parrots, 12 terrapins, 1 spider in total.
Thus the answer is 12 terrapins and 1 spider.
6 years ago
Meng Khim Goh
Woops I was too hasty. More ways to get 46 legs between 12 animals.
Eg 2 parrots, 9 terrapins, 1 spider.
6 years ago
Meng Khim Goh
So there are multiple solutions for this question, unless more information is provided or assumptions made.
2P 12T 1S
3P 10T 2S
4P 8T 3S
5P 6T 4S
6P 4T 5S
7P 2T 6S
6 years ago
Ivy Tan
Thanks 😊 yup instead very confusing ...there are so many solutions to these questions ...I find it hard to explain to my girl ...It needs some time to solve this question which I worried if this question appear in exam
6 years ago
Meng Khim Goh
If this is one of those challenging questions in assessment books for students to practise thinking out of the box, that's fine.
Otherwise, if it is an exam or practise question set by schools, it is flawed. Schools are required to set unambiguous questions with only one clear solution that can be solved by methods that are taught (not using guess and check at levels higher than P4)
6 years ago
Phyllis Sun
Asked 9 years ago
SG
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Primary 5
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Number and Algebra
Pls help another P5 maths. Thanks
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2
BA Poh Ann
6 years ago
Phyllis Sun
Thanks
6 years ago
Phyllis Sun
Asked 9 years ago
SG
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Primary 5
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Number and Algebra
Replies
1
Soo Vei Li
Hope this will help you to prompt/guide your child to solve the problem.