Vivian Ang
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Help please.Thanks

Replies 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 chevron_right Primary 3 chevron_right Number and Algebra

I just don't get it. Please help. P3 maths.

Replies 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.

6 years ago
Tan Jian Liang

6 years ago
Susan Lim Yap

U means unit?

6 years ago
Tan Jian Liang

6 years ago
Jayasitra Tangavellu

Ok i fully understand nw...u means unit..tks

6 years ago
Priscilla Ng

2 pony tails girls = 48+26 = 74 1 pony tails girl = 74/2 = 37 The boy = 48-37 =11

6 years ago
Bliss Toh

yes boy 11 and girl 37

6 years ago

Ivy Tan
Asked 9 years ago

SG chevron_right Primary 3 chevron_right Number and Algebra

Please help with this question ...is there any others way other than guess and check methods. Thanks in advance.

Replies 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 chevron_right Primary 5 chevron_right Number and Algebra

Pls help another P5 maths. Thanks

Replies 2

BA Poh Ann

6 years ago
Phyllis Sun

Thanks

6 years ago

Phyllis Sun
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Replies 1

Soo Vei Li

Hope this will help you to prompt/guide your child to solve the problem.

6 years ago