iMath | Community

Elvira Ho

Asked 9 years ago

SG Primary 6 Number and Algebra

Seek for help

Replies 2

Raymond Ng

6 years ago

Yeo See Yeong

6 years ago

Bee Yen

Asked 9 years ago

SG Primary 5 Fractions

Please help - P5 Question: Peter is selling pencils. He sold 3/5 of them in the morning and 1/4 of the remainder in the afternoon. If Peter sold 200 more pencils in the morning than in the afternoon, how many pencils did Peter have in the beginning?

Replies 5

Raymond Ng

6 years ago

Caleb Tey

6 years ago

Raymond Ng

Another way of looking at it

6 years ago

Bee Yen

thanks a lot

6 years ago

Shaoyang Brandon

Hi, Bee Yen. View the steps below to calculate the total number of pencils in the beginning. Step 1: 1/4 x 2/5 (remainder) = 2/20 = 1/10 of total pencils sold Step 2: (3/5 - 1/10) of total pencils sold = 200 pencils (6/10 - 1/10 = 5/10 = 1/2) of total pencils sold = 200 pencils Total pencils = 200 x 2 = 400 :)

6 years ago

SH Charlene Ng-Ong

Asked 9 years ago

SG Primary 5 Number and Algebra

Help needed. P5. Thanks!

Replies 8

Izam Marwasi

6 years ago

Raymond Ng

6 years ago

AkiHua Nakamori

Using two dimensional model har...

6 years ago

Yip Kai Meng

Using a numerical example on line 3, if there is 1 cookie each of the 9 jars, there will be 3 cookies in each jar at first. Hence, 1/3 of cookies in each jar is left in this problem sum. 2/3 of cookies in each jar is 20. There are 30 cookies in each jar at first. There are 36 cookies in each packet.

6 years ago

Yip Kai Meng

I dun think p5 students have learnt algebra yet, so have to analyze using numbers as an example

6 years ago

Raymond Ng

Did I use algebra? ☺ Fine. Does it help if I draw an apple or a random shape to replace my n? Or has P5 not learnt shapes yet..? 😭

6 years ago

AkiHua Nakamori

Algebra is just "a substitute " 代數。

6 years ago

SH Charlene Ng-Ong

Thanks everyone!

6 years ago

AkiHua Nakamori

Using two dimensional model har...

6 years ago

Carimakan Guy

Asked 9 years ago

SG Primary 4 Number and Algebra

Need help on P4 math.. thanks in advance

Replies 7

Raymond Ng

(9 + 3) × 6 - 3 = 69

6 years ago

Carimakan Guy

Thanks Raymond..you have model to show the working

6 years ago

Ivin Yeo

https://youtu.be/UwvWEu2j7tM

6 years ago

Ivin Yeo

Carimakan Guy check out the above video by Ms Vanessa Wong. She has posted many good and helpful videos in this group..This videos will help you to understand the concept of Excess and Shortage problem…she has other videos for Excess & Excess...

6 years ago

Carimakan Guy

Thanks Ivin.. i watched her videos before :)

6 years ago

Ivin Yeo

Carimakan Guy you can draw out the model for your question using the method shown in the video…its the same kind of question, just that the number of lollipops are different.

6 years ago

Carimakan Guy

Will do ..thanks again

6 years ago

Carimakan Guy

Thanks Raymond..you have model to show the working

6 years ago

Carimakan Guy

Thanks Ivin.. i watched her videos before :)

6 years ago

Ivin Yeo

Carimakan Guy you can draw out the model for your question using the method shown in the video…its the same kind of question, just that the number of lollipops are different.

6 years ago