Yueh Mei Liu
Asked 8 years ago

SG chevron_right chevron_right

Welcome to the group, our 4001th member, Yesmin tan.

Replies 1
Yesmin Tan

Thank u! =)

5 years ago

Christine Chia
Asked 8 years ago

SG chevron_right Primary 3 chevron_right Number and Algebra

P3. Please help.

Replies 9
Benny Teo

21 is correct.

5 years ago
Christine Chia

How did you get it?

5 years ago
Kevin Cordoviz

1+6 = 7 7x3 = 21 21 -3 = 18 18+ 9 = 27

5 years ago
Kevin Cordoviz

I think it has something to do with linking the numbers (triangularly shaped chain) but using operations.

5 years ago
Kevin Cordoviz

Or it can be . 6 times 3 leads to 18. 7 times 3 leads to 21. (missing number) then 9 x3 leads to 27 on the other side.

5 years ago
Ida Tan

Each smaller number x 3 will give the number on the opp end

5 years ago
Kevin Cordoviz

^ yes. I was thinking of something similar too. What an elegant solution. :)

5 years ago
Ingo Steil

When you take the numbers on the opposite sites, you just multiply the smaller number by 3 and get as the result the bigger number

5 years ago
Christine Chia

All, got it. thanks so much!!!

5 years ago

Nabira Sf Ong
Asked 8 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

P5 quesition.

Replies 5
Zhong Shu Hao

5 years ago
Nabira Sf Ong

Thks sir. Got it. Next question is what software did u use to draw such colour model?

5 years ago
Zhong Shu Hao

hehe... ppt 😂

5 years ago
Nabira Sf Ong

Oh.. ic, thk for sharing.

5 years ago
Stacey Tan

5 years ago

Cynthia Tay
Asked 8 years ago

SG chevron_right Primary 3 chevron_right Number and Algebra

Wei Li has 58 $2 notes and $5 notes altogether. The total value of all the money is $164. How many $5 notes does Wei Li have? – how to explain step 3?step 1: 58 x $2 = $116step 2: 164 - 116 = 48step 3: 5-2 = 3step 4: 48 / 3 = 16 ($5 notes)

Replies 4
Wenxiang Huang

Step 3 addresses the balance of 3 dollars amounting the the remaining money. Note that 2 dollars make up 5 dollars too

5 years ago
Elaine Eo

the difference between the notes.

5 years ago
Cynthia Tay

thanks!!

5 years ago
Wenxiang Huang

Dropped you a message, Cynthia Tay

5 years ago

Norizan Othman
Asked 8 years ago

SG chevron_right Primary 6 chevron_right Fractions

Need help 😢

Replies 2
Yueh Mei Liu

Work backwards. 49 +3 = 52 (this is 2/3 odd the remaining). From here, we can work out the amount for the remaining. Keep working backwards and you'll get to it.

5 years ago
Norizan Othman

Thks Yueh Mei .... will try

5 years ago

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