Tutor MathsGuru: Ask me for your burning Maths questions!

[mathsguru]

bigmac:

Need help in these P5 Math:

1. Alice paid $2300 for 28 stools, 20 tables and 4 cabinets. One stoll and one table cost $75. One Stool and one cabinet cost $165. How much did Alice pay for one cabinet?

2. A slice of chocolate cake cost $1 more than a slice of cheesecake. 100 slices of chocolate cake and cheesecake were sold for $359. There are 18 more slices of chocolate cakes than cheesecake.
a) How many slices of chocolate cakes were sold?
b) Find the cost of each slice of chocolate cake.

Thank you so much in advance.

Hi Bigmac,

Here are my solutions. Hope they help!


MathsGuru

http://www.postimage.org/image.php?v=aVN3ikA

http://www.postimage.org/image.php?v=aVN3kPJ

[underthesea]

mathsguru:

underthesea:

Need help in this P6 maths question:


Alvin, Brian and Charlie shared some comics among themselves. Alvin received 2/5 of them while Brian received 5/6 of what he and Charlie received altogether. If Alvin received 180 more comics than Charlie, how many comics did Brian receive?

The \"he\" here is referring to Alvin or Brian? I said it's Alvin but according to the model answer given by ds teacher, it's referring to Brian.

My answer is 3150, teacher answer is 300.

Please help. TIA.

Hi Underthesea,



Please take a look at my solution. Hope you get a clearer picture now of what \"he\" refers to. It should be Brian according to the structure and flow of the sentence.

Cheers,
MathsGuru

http://www.postimage.org/image.php?v=gxiFLg0

mathsguru,
Thank you so much for the solution. Very clear explanation.

[bigmac]

mathsguru,


Thanks for your clear explanation. Thank you so much! Really appreciate it.

[chiclil]

Hi Mathsguru


Sorry but this is just P2 maths question but I am not sure how to present the workings.


Question 1.

Cheryl and David work in the same building.
Cheryl is on the 18th floor.
David is on the 29th floor.
How many floors are in between them ?

( I would actually just count from 19 to 28 th floor as answer 10 but not sure if there is a proper way to present the answer)



Question 2

Study the pattern and put in the missing number.

What should the answer be ?

http://www.postimage.org/

[ooptimizer]

If P2, answer should be:

1.11 floors
2. 55

[Muffins]

chiclil:

Hi Mathsguru


Sorry but this is just P2 maths question but I am not sure how to present the workings.


Question 1.

Cheryl and David work in the same building.
Cheryl is on the 18th floor.
David is on the 29th floor.
How many floors are in between them ?

( I would actually just count from 19 to 28 th floor as answer 10 but not sure if there is a proper way to present the answer)

An easy way to remember is the difference between the floors is the higher floor minus the lower floor minus one. In this case, the answer is 28-19-1 = 10 floors

chiclil:

Question 2

Study the pattern and put in the missing number.

What should the answer be ?

http://www.postimage.org/

It is the 1st row number minus the second row e.g. 30-25=5, 70-20=50, so 100-45=55

Hope I helped!

[small]

chiclil:

Hi Mathsguru


Sorry but this is just P2 maths question but I am not sure how to present the workings.


Question 1.

Cheryl and David work in the same building.
Cheryl is on the 18th floor.
David is on the 29th floor.
How many floors are in between them ?

( I would actually just count from 19 to 28 th floor as answer 10 but not sure if there is a proper way to present the answer)


Question 2

Study the pattern and put in the missing number.

What should the answer be ?

http://www.postimage.org/

Hi chiclil,

My solution:

Question 1 (base on 18th floor to 29th floor)

Let say 18th floor = 0
so the 29th floor = ( 29-18 ) = 11
Thus from 0 to 11 floor, there are 10 floors in between.

There are 10 floors in between them


Question 2

From the table:
row 1 30 - 5 = 25
row 2 70 - 20 = 50

so 100 - 45 = 55

The answer is 55.

[Muffins]

Thanks for the explanations, again, small! You and BigDevil could be the next Mathsguru!

[worldangel]

I have a question here:


If the question never states to leave the answer as fraction/mixed number or decimal, can the child leave the answer as a decimal and still get it correct?

For example, the child writes the answer as 6.66667 = 6.67. The answer is
6 2/3.

This is for a question in Paper 2 btw. Thanks in advance

[small]

worldangel:

I have a question here:


If the question never states to leave the answer as fraction/mixed number or decimal, can the child leave the answer as a decimal and still get it correct?

For example, the child writes the answer as 6.66667 = 6.67. The answer is
6 2/3.

This is for a question in Paper 2 btw. Thanks in advance

Hi worldangle,

My opinion is 6 2/3 will be good enough and sufficient and yet the kid not need to spend more time.