Joanne Chua
Asked 8 years ago

SG chevron_right Primary 4 chevron_right Fractions

Please help on this question, TIA

Replies 7
BA Poh Ann

5 years ago
Joanne Chua

May I know Blue need to draw so many units? Pls explain

5 years ago
BA Poh Ann

Because qn stated 3/7 (B) = 2/3 (R) Common multiple of 2 n 3 (for both numerators) is 6.

5 years ago
Joanne Chua

Can explain why 5units = 40

5 years ago
BA Poh Ann

Qn stated "There were 40 more blue balloons than red ones". Since Blue had 14 units n red had 9 units, therefore between 14 units and 9 units is 5 units which is equal to 40.

5 years ago
BA Poh Ann

*difference between

5 years ago
Joanne Chua

Ok thanks.

5 years ago

Jesline Goh
Asked 8 years ago

SG chevron_right Primary 4 chevron_right Fractions

Anyone can help with models? Thanks!

Replies 3
Connie Lin

5 years ago
Soo Vei Li

5 years ago
Jesline Goh

Thanks!

5 years ago

Lee Yuet Meng
Asked 8 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Is this by guess and check or there is some more sophisticated way of solving by ratio method?

Replies 4
Soo Vei Li

The difference between their ages remains constant no matter what the ratios are -- 29. Drawing models of 1 unit and 2 units to represent their ages, the difference in terms of units is 1. So, 1 unit = 29, her father's age is 2 units which is 58 years.

5 years ago
Lee Yuet Meng

Thank you!

5 years ago
Linda Tan

5 years ago
Linda Tan

5 years ago

Orange Tan
Asked 8 years ago

SG chevron_right Primary 4 chevron_right Number and Algebra

Need help for this question, Thank you.

Replies 4
Tjew Sheng Wei

The 3 printed numbers are 15, 28 and 34.

5 years ago
Tjew Sheng Wei

5 years ago
Soo Vei Li

5 years ago
Orange Tan

Vei Li Soo,Tjew Sheng Wei Thank you.

5 years ago

Joanne Chua
Asked 8 years ago

SG chevron_right Primary 4 chevron_right Geometry

Anyone know how to do this, Thank you!

Replies 11
Mike Tan

5 years ago
Soo Vei Li

5 years ago
Connie Lin

5 years ago
Mike Tan

Sorry i forgot to multiply by 2, should be 36 x 2 = 72 degrees

5 years ago
Pieter Cronje

5 years ago
Joanne Chua

Thank for the fast response.

5 years ago
Chuon Chyang Ooi

C+(c+9)+2 (C+9)=135 2c+9+2c+18=135 4c+27=135 4c=135-27 4c=108 C=27. B=2 (c+9) B=2 (27+9) B=2×36 B=72 So A=27+9 B=72 C=27

5 years ago
Joanne Chua

Vei Li Soo & Connie Lin thank for Yr clear explanation and also tks to others that response.

5 years ago
Jasmine Tan

I think the answer is 72

5 years ago
AisinGioro YongZhen

hope this is helpful

5 years ago
AisinGioro YongZhen

Step 1: we identify the smallest unit which is C. Step 2: We express A and B relative to C Step 3: We fit them into the given data, in this case A+B+C = 135

5 years ago

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