iMath | Community

Janu Rafiq

Asked 8 years ago

SG Primary 6 Number and Algebra

Pls help

Replies 3

Chia-Chan Bk

5 years ago

Janu Rafiq

Thanks for the Ana

5 years ago

Janu Rafiq

Sry ans

5 years ago

Charlene Danzeldarielledelia Eric

Asked 8 years ago

SG Primary 3 Number and Algebra

P3 maths. Pls help.Eric See Toh

Replies 7

Soo Vei Li

You can work backwards... Start by drawing models to represent the 'after' situation: S has 1 unit and Y has 7 units. Then complete the bars to show the 'before' situation using the info given (92 given away & 8 lost). You can refer to a similar problem solved earlier tonight https://www.facebook.com/photo.php?fbid=461246857387569&set=gm.495101037313224&type=1&theater

5 years ago

Joe Neitham

Is this correct?

5 years ago

Izam Marwasi

End Yvonne 7u Sheryn u Dif-6u Dif in lost/given away= 92-8=84 6u=84 u= 14 At first Y-7u+8 E-u+92 7u+8+u+92= 8u+100 == 8x14 + 100= 212

5 years ago

Soo Vei Li

Joe Neitham, your model is not fully correct because you did not get the the two girls having same number at the start. But you somehow got the correct answer because of a mistake in solving the algebraic equation. I've shown it in the photo.

5 years ago

Joe Neitham

Thanks Vei Li Soo for pointing that out :-) So is the answer 106 the number of stickers each of them have at first?

5 years ago

Soo Vei Li

Yes, they each have 106 at first.

5 years ago

Xavier Sng

I like Izam Marwasi's method as it utilizes the concept of difference to arrive at the answer quickly.

5 years ago

Irene Kong

Asked 8 years ago

SG Primary 6 Measurement

Pls help.

Replies 2

Yeo See Yeong

Volume of Clay = 48x30x5 = 7200cm^3. volume of cube = 1000 cm^3. (a) 7200/1000 = 7.2. Therefore, maximum cubes can be formed = 7 (b) Volume of clay left = 200cm^3

5 years ago

Irene Kong

Thank yeo see yeong.

5 years ago

Vivian Ang

Asked 8 years ago

SG Primary 6 Number and Algebra

Help please.thks

Replies 2

Xavier Sng

(a) 100 min before 1pm is 11.20am. (b) speed of slower printer = (70 times 6) divided by (100min - 70min) = 14 copies of newsletter per min Each machine printed 14 times 100 = 1400 newsletters Total number of copies printed by the two machines is thus 2800.

5 years ago