Q&A - P4 Math

[Michaelia0816]

Jennifer has some cubes.her number of cubes is more than 20 but less than 40.if she puts them into packets of 6,there will be 1 cube left. If she puts them into Packets of 7, there are 3 cubes left. How many cubes does jennifer have?

[Thein]

[quote]Jennifer has some cubes.her number of cubes is more than 20 but less than 40.if she puts them into packets of 6,there will be 1 cube left. If she puts them into Packets of 7, there are 3 cubes left. How many cubes does jennifer have?
[/quote] Since number of cubes is more than 20 but less than 40


http://i50.tinypic.com/ilg4cx.jpg\">

Hence the number of cubes Jennifer has is 31

[Charnic]

Dear all, pls assist w the model drawing for the following . Thanks.

John has twice as many apples as Mary. After John gave 40 apples to Mary, Mary has thrice as many apples as John. How many apples did Mary has at first ?

[MathIzzzFun]

CNS:

Dear all, pls assist w the model drawing for the following . Thanks.

John has twice as many apples as Mary. After John gave 40 apples to Mary, Mary has thrice as many apples as John. How many apples did Mary has at first ?

Hi

http://i46.tinypic.com/29beo2o.png\">

cheers.

[hardeshis]

i spent 1/9 of my salary on a television set and 5/8 of the remainder on a refrigerator. I saved the remaining $420. How much i did spend on the refrigerator?

[MathIzzzFun]

hardeshis:

i spent 1/9 of my salary on a television set and 5/8 of the remainder on a refrigerator. I saved the remaining $420. How much i did spend on the refrigerator?

Hi
spent 1/9 salary --> left 8/9 salary (remainder)
spent 5/8 of remainder on refrigerator
= 5/8 x 8/9 salary = 5/9 salary
left --> 8/9 - 5/9 = 3/9 salary
3/9 salary --> $420
5/9 salary --> $700
$700 spent on refrigerator

cheers.

[Charnic]

Thanks ! Would you think this is a little too difficult for a P4 child ?

[hardeshis]

MathIzzzFun:

hardeshis:

i spent 1/9 of my salary on a television set and 5/8 of the remainder on a refrigerator. I saved the remaining $420. How much i did spend on the refrigerator?

Hi
spent 1/9 salary --> left 8/9 salary (remainder)
spent 5/8 of remainder on refrigerator
= 5/8 x 8/9 salary = 5/9 salary
left --> 8/9 - 5/9 = 3/9 salary
3/9 salary --> $420
5/9 salary --> $700
$700 spent on refrigerator

cheers.

Thank you. Understood.

[corneyAmber]

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[hardeshis]

Karen went shopping with total 50 pieces of $5 notes and $2 notes. After spending 10 pieces of ther $5 notes and 1/3 of her $2 notes, an equal number of $5 notes and $2 notes are remaining.


1) How many $5 notes did she bring along?
2) What is total value of $2 notes she had brought.