Aishwarya Karthik
Asked 8 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

P5 questions. Help pls!!

Replies 0

Aishwarya Karthik
Asked 8 years ago

SG chevron_right chevron_right

Replies 5
Val Soh

For Q16. 1. Draw 15sq in fig 6. 2. 20 x 2 +3= 43 3. (267-3)/2= 132

5 years ago
Xavier Sng

5 years ago
Xavier Sng

5 years ago
Aishwarya Karthik

Thanks a ton😊

5 years ago
Xavier Sng

The pleasure is mine. Regards

5 years ago

Julia Tan
Asked 8 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

May I know how to do this? Thanks :)

Replies 10
Rye Tan

2:5 ---> 4:10 1;3 ---> 3:9 Hence, shaded area is 1 unit. Area of square = 6cm x 6cm = 36cm^2 Area of shaded part = 36cm^2 / 4 = 9cm^2

5 years ago
Tan Weiqiang

Hi, you may want to refer to this video. The concept is the same, only the presentation of the question is different, https://www.youtube.com/watch?v=1SW4QawN-Uo

5 years ago
Julia Tan

why did u x 2 n x3 to become 4:10 and 3:9? and pattern or step needed for it? thks

5 years ago
Raymond Ng

5 years ago
Rye Tan

Because we are trying to make the difference for both sides of the ratio the same.

5 years ago
Julia Tan

Tan Weiqiang, i follow ur method and balance the shaded part. but cant get the ans... :( omg

5 years ago
Julia Tan

Raymond Ng, may i know why u x27?

5 years ago
Raymond Ng

Same idea as everyone else's soln... the key is to balance. x27 coz difference between 36 & 90 is 54, but 1 & 3 is only 2. So, need to "blow it up" 27 times to maintain the same difference

5 years ago
Raymond Ng

If you're comfortable with algebra, then algebraic way is also very simple. 4 short lines settle liaoz...

5 years ago
Yeo See Yeong

5 years ago

Tan Weiqiang
Asked 8 years ago

SG chevron_right Primary 6 chevron_right Fractions

Today's question is typically a 5 mark question. Usually the last few in Paper 2. The concept is actually learned through easier questions attempted when the student is younger. This question in a sense, is an extension from what they have already learnt. The workings are tedious and requires a certain level of care from the students in order to be able to solve it. Hope it helps!

Replies 0

Voon Jasmine
Asked 8 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Please help this qn Adrian Ng. Thank you very much n appreciated it. Lowest common multiple method.

Replies 2
Rye Tan

5 years ago
Voon Jasmine

Thank you Rye Tan. Really appreciated it. Clear solution. :)

5 years ago

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