Irene Kong
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Statistics

Pls help?

Replies 5

Xavier Sng

Average daily expenditure = 24 + (0.56 × 3) / 4 = $ 24.42 Average cost of meal over the whole trip = 24.42 ÷ 3 = $ 8.14

6 years ago
Irene Kong

Thank Xavier Sng:)

6 years ago
Pang Shing Hsiu

Refer to the question: Total cost of 3 days = 24.56×3= 73.68 Add e cost for 4th day to get total cost of 4 days = 24 + 73.68= 97.68 1 day = 3 meals 4 days = 12 meals Cost per meal = 97.68 ÷ 12 = $8.14. It is a part whole concept followed by division. See average as multiples with the no. of days. Easier for the child. Draw models if necessary.

6 years ago
Xavier Sng

You are most welcome Irene. The method I showed is taking advantage of the fact that the money spent was $24 and some for the first three days and $24 exactly on the fourth. By taking the extra bit more than $24 in the first three days and share that over the four days, it takes away the necessity in dealing with bigger numbers. It is so simple that a child need not even use a calculator. Regards

6 years ago
Irene Kong

Thank Pang Shing Hsiu :)

6 years ago

Alan D'nacio
Asked 9 years ago

SG chevron_right Primary 4 chevron_right Number and Algebra

Can anyone please help solve. P4 maths

Replies 4

Xavier Sng

6 years ago
Xavier Sng

Interesting thing to note is that Liming with $180 was already initially having twice the amount that Gopal had ($90). Since Liming spent twice as much as Gopal ($20 to $10), the remainder of Liming's money must still be twice of what Gopal had left with.

6 years ago
Alan D'nacio

Thank you Xavier much appreciated. Workings are very clear

6 years ago
Xavier Sng

Please don't mention it, it is my pleasure. Thank you for your question.

6 years ago

Michelle Ang
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

How to get the answer 20?

Replies 11

Xavier Sng

4 times the next higher number, which is 5. So 4 x 5 = 20

6 years ago
Xavier Sng

Starting from the top most sector and going clockwise : 3 times 4 (1 more than 3) to give 12, 7 times 8 (1 more than 7) to give 56, 2 times 3 (1 more than 2) to give 6, 5 times 6 (1 more than 5) to give 30, 4 times 5 (1 more than 4) to give 20 and finally, 9 times 10 (1 more than 9) to give 90.

6 years ago
Lukas Lee

I think it's 4 square plus 4. The pattern seems to be squaring what's inside the then add the number itself. Example 9 squared plus 9 = 90, 3 square plus 3 = 12

6 years ago
Xavier Sng

Very sharp, Lukas. I like!

6 years ago
Xavier Sng

In algebra it is n x (n + 1) = square of n + n

6 years ago
Lukas Lee

Hehe thank you X!. Old brain needs to work so next time can teach my nieces.

6 years ago
Xavier Sng

Well, aren't we all knocking on Heaven's door haha

6 years ago
Lukas Lee

Yes we are. But before the door opens let's help one another and live better!

6 years ago
Xavier Sng

Aye to that.

6 years ago
Michelle Ang

Thks both!!! Got it!

6 years ago
Xavier Sng

Happy to help. Thank you for the question.

6 years ago

Marian Goh
Asked 9 years ago

SG chevron_right Primary 4 chevron_right Number and Algebra

Hi.. can help plssssa... p4 qn. Thanks

Replies 4

Caleb Tey

6 years ago
Marian Goh

Thanksssss so much Caleb Tey 😊

6 years ago
Caleb Tey

My writing is messy so don't guess if u cannot read. Just ask me to dichpier

6 years ago
Marian Goh

It's ok .. i showed my son lol ..

6 years ago

Jane Tay
Asked 9 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Pls help to solve this qn. Thank you.

Replies 6

Ray Tan

Is this a P5 question?

6 years ago
Xavier Sng

6 years ago
Raymond Ng

6 years ago
Jane Tay

Yes it's P5 qn.

6 years ago
Jane Tay

Tq, Xavier n Raymond.

6 years ago
Xavier Sng

You are more than welcome. Thank you for an interesting question.

6 years ago