Q&A - P4 Math

[tianzhu]

Sharmum:

3)Eugene had 80 more marbles than Sharon at first. After Sharon threw 12 marbles away, Eugene had thrice as many marbles as Sharon. How many marbles did Eugene have at first?
Include a clearly labelled model as part of your method.

Hi

Draw 3 boxes to show Eugene marbles and 1 box to show Sharon’s marbles.

2 units ------ 80+12 ------92
1 unit ------- 46

Eugene -------3*46 -------138

Best wishes

[Sharmum]

Hi Tian Zhu,


You really think very fast !

:thankyou:

[Superbugs]

Pls assist on this question:


Janice’s age is a multiple of 7. Next year, her age will be a multiple of 4. If Janice is less than 40 years old, how old is she now?

This year: Multiple of 7
7,14,21,28,35
Next year: Multiple of 7
4,8,12,16,20,24,28,32,36
==> If compared to this year
3,7,11,15,19,23,27,31,35

My son asked why not 7 but 35?

[mathfreak]

Superbugs:

Pls assist on this question:


Janice's age is a multiple of 7. Next year, her age will be a multiple of 4. If Janice is less than 40 years old, how old is she now?

This year: Multiple of 7
7,14,21,28,35
Next year: Multiple of 7
4,8,12,16,20,24,28,32,36
==> If compared to this year
3,7,11,15,19,23,27,31,35

My son asked why not 7 but 35?

This question actually has two answers. One is 7, and the other is 35. 7+1=8, a multiple of 4. 35+1=36, a multiple of 4. For the question to have only one solution, \"multiple of 4\" should be changed to \"multiple of 8\".

[Superbugs]

mathfreak:

Superbugs:

Pls assist on this question:


Janice's age is a multiple of 7. Next year, her age will be a multiple of 4. If Janice is less than 40 years old, how old is she now?

This year: Multiple of 7
7,14,21,28,35
Next year: Multiple of 7
4,8,12,16,20,24,28,32,36
==> If compared to this year
3,7,11,15,19,23,27,31,35

My son asked why not 7 but 35?

This question actually has two answers. One is 7, and the other is 35. 7+1=8, a multiple of 4. 35+1=36, a multiple of 4. For the question to have only one solution, \"multiple of 4\" should be changed to \"multiple of 8\".

Tks a lot! Question is vague!

[mathfreak]

Superbugs:

mathfreak:

[quote=\"Superbugs\"]Pls assist on this question:


Janice's age is a multiple of 7. Next year, her age will be a multiple of 4. If Janice is less than 40 years old, how old is she now?

This year: Multiple of 7
7,14,21,28,35
Next year: Multiple of 7
4,8,12,16,20,24,28,32,36
==> If compared to this year
3,7,11,15,19,23,27,31,35

My son asked why not 7 but 35?

This question actually has two answers. One is 7, and the other is 35. 7+1=8, a multiple of 4. 35+1=36, a multiple of 4. For the question to have only one solution, \"multiple of 4\" should be changed to \"multiple of 8\".

Tks a lot! Question is vague![/quote]You're welcome.

[visitor]

Need help…

Sharon baked between 10 and 20 muffins. If she packed them in bags of 4, she would have 2 muffins left. If she packed them in bags of 5, she would have short of 1 muffin. How many muffins did she baked?

Do we need to apply any modelling to solve this qn? Thks…

[MathIzzzFun]

visitor:

Need help....

Sharon baked between 10 and 20 muffins. If she packed them in bags of 4, she would have 2 muffins left. If she packed them in bags of 5, she would have short of 1 muffin. How many muffins did she baked?

Do we need to apply any modelling to solve this qn? Thks...

hi

using MD ...

http://i43.tinypic.com/etwms7.jpg\">

cheers.

[visitor]

I m lost.......it's time that I should send my son for Maths tuition


Thanks for your help!

[babies]

Hi, need to double check.:)


Q)
Tin jin saved $3500 in April. His monthly salary is twice the amount he saved in April.
He saved $4200 less than the amount he spent in May. How much ddi he save in May?

Is $2800 (saved in May) correct?