Q&A - P5 Math

[chloecube]

what is the value of 1-2+3-4+5…47-48-49?

is the a formula for such question?

sorry for so many questions,thks

[MathIzzzFun]

chloecube:

jack wants to buy a bicycle but is short of $44. Jill wants to buy the same bicycle but is short of $37. if they combine their money, they will have just enough money to buy the bicycle. what is the cost of 2 such bicycle?


thks for helping

Can you work out the answer with this model ?

http://i47.tinypic.com/2cwo0go.png\">

cheers.

[MathIzzzFun]

chloecube:

what is the value of 1-2+3-4+5....47-48-49?

is the a formula for such question?

sorry for so many questions,thks

http://i46.tinypic.com/2a0c97c.png\">

cheers.

[MathIzzzFun]

chloecube:

i think of a number which is less than 50. when the number is divided by 7. the reminder is 1. when the number is divided by 12, the reminder is 7. what is the number?


other than guessing, is there an easier method?

List out multiples of 12 + 7, in the range
--> 43, 31, 19, 7

Divide these by 7 and find the number that leaves a remainder of 1 --> 43

cheers.

[Jamesbond]

Thanks for all ur help regarding my previous sum…Pl help in this…seems to be so simple…but my ds got confused…


James had $40 more than Ken. After James gave Ken $60, Ken had twice as much as James. How much money did James have at first?

[chloecube]

thks again MathIzzzFun !!

[Jamesbond]

quekcc:

Jamesbond:

Thanks for all ur help regarding my previous sum....Pl help in this.....seems to be so simple...but my ds got confused...


James had $40 more than Ken. After James gave Ken $60, Ken had twice as much as James. How much money did James have at first?

http://i45.tinypic.com/a267wg.jpg\">

:thankyou:

[Jamesbond]

Pl help in this sum…

Jane bought some slices of cheesecakes and mango cakes for a party. She spent $60 and $40 on the cheesecakes and mango cakes respectively. Each slice of mango cake cost $2 more than each slice of cheesecake and she bought twice as many as cheesecakes as mango cakes. Find the cost of each slice of cheesecake?
Thx.

[tianzhu]

Jamesbond:

Pl help in this sum...

Jane bought some slices of cheesecakes and mango cakes for a party. She spent $60 and $40 on the cheesecakes and mango cakes respectively. Each slice of mango cake cost $2 more than each slice of cheesecake and she bought twice as many as cheesecakes as mango cakes. Find the cost of each slice of cheesecake?
Thx.

Hi

Hope this helps.

Best wishes

http://farm9.staticflickr.com/8234/8383690962_6b6d7207d6_z.jpg\">

[Jamesbond]

tianzhu:

Jamesbond:

Pl help in this sum...

Jane bought some slices of cheesecakes and mango cakes for a party. She spent $60 and $40 on the cheesecakes and mango cakes respectively. Each slice of mango cake cost $2 more than each slice of cheesecake and she bought twice as many as cheesecakes as mango cakes. Find the cost of each slice of cheesecake?
Thx.

Hi

Hope this helps.

Best wishes

http://farm9.staticflickr.com/8234/8383690962_6b6d7207d6_z.jpg\">

Thank you tianzhu....