Q&A - P3 Math

[hercules]

tracywham:

Hi, sorry to trouble all of you again and need your help to solve this question.


Dave has 11 times as much as Oscar. Calvin and Dave have $172. Calvin and Oscar have $92. How much does Calvin have?

Solving for fun (below is the way I train my own kids).

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[ksoh3000]

Hi


Can anyone help to solve this qn : ?
-The number of fleas on a dog doubles every day. By the 20th day,the dog was completely covered with fleas.
(a) On which day was the dog half-covered with fleas?
(b) On which day was the puppy a quarter-covered with fleas?


Thank You

[ksoh3000]

Tks for the prompt answer

[tracywham]

Hi, i need help to solve tis question:


A teacher would like to share some muffins equally among 8 or 9 pupils. What is the least number of muffins she should buy if she wants 2 muffins for herself as well?

Thanks alot

[qms]

tracywham:

A teacher would like to share some muffins equally among 8 or 9 pupils. What is the least number of muffins she should buy if she wants 2 muffins for herself as well?

The number of muffins should be sufficient to be shared by 8 or 9 pupils, meaning, the number must be divisible by 8 and 9. So, it is 72.

She wants 2 muffins for herself, which means she needs to buy 2 more on top of the 72.

Total = 74 muffins

[tracywham]

Thanks. My ger was doing the past year paper and i saw the answer was 26 muffins. I have doubts on the answer. She got the answer as 74 muffins also. So, most probably a misprint?

[qms]

tracywham:

Thanks. My ger was doing the past year paper and i saw the answer was 26 muffins. I was rather confused. She got the answer as 74 muffins also. So, there's must be a misprint?

24 is divisible by 8 but not 9 (assuming my multiplication is correct ). So, how is it possible that the answer is 26?

So, either the question or the answer is wrong. More like the latter.

[tracywham]

Thanks.

[ksoh3000]

Hi


Can anyone help in solving this qn ?
1)James opened a book and the product of the page numbers facing each other is 72. What pages of the book did he turn to ?

Thank You

[Sun_2010]

ksoh3000:

Hi


Can anyone help in solving this qn ?
1)James opened a book and the product of the page numbers facing each other is 72. What pages of the book did he turn to ?

Thank You

Hi Ksoh3000,

The two page numbers must be consecutive.
Product of the two = 72
So by a number \"feel\" it should be = page number 8 and 9

PS- for P3 Maths there is a separate thread under Primary 3. Please post there. Thanks.