## Q&A - P4 Math

### Re: Q&A - P4 Math

Another one!!

There are only two rectangles whose dimensions are whole numbers and whose area and perimeter are the same. Can you find both?

There are only two rectangles whose dimensions are whole numbers and whose area and perimeter are the same. Can you find both?

### Re: Q&A - P4 Math

Hithmejlfm wrote: Question: Gopal, Jack, Timothy have 60 Stamps altogether.

Timothy has 20 stamps more than Jack. Timothy has twice as many stamps as Gopal.

(a) How many stamps does Gopal have?

(b) How many stamps should Jack give to Timothy so that Timothy would have thrice as many stamps as Jack?

You may use MD.

Draw 2 boxes for Jack.

Draw 2 boxes + 20 for Timothy.

Draw 1 box + 10 for Gopal

5 boxes (5 units )+ 30 ------- 60

1 unit ------ 6

a)Gopal ------- 6+10 ------ 16

b)Timothy and Jack had (32+12) or 44 stamps altogether.

Divide into 4 parts

Timothy ------ 33

Jack -------11

Jack must give 1 (33-32) stamp to Timothy.

Best wishes

### Re: Q&A - P4 Math

Hithmejlfm wrote: There are only two rectangles whose dimensions are whole numbers and whose area and perimeter are the same. Can you find both?

Good Morning.

P4, either use listing or GC.

The two rectangles are 4*4 and 3*6.

Check

4*4 ----- 2(4+4) -----16

3*6 ------ 2(3+6) -------18

Best wishes

- bookwormkids
- GreenBelt
**Posts:**106**Joined:**Tue Sep 21,

### Re: Q&A - P4 Math

Hi MathIzzzFun! Thanks for your help!MathIzzzFun wrote:Hibookwormkids wrote:Q1) May bought 3 apples and 4 oranges. Sally bought 4 apples and 3 oranges. Sally paid $0.20 more than May. May paid $3.40 for the fruit. Find the cost of 2 apples.

Q2) The figure shown below is made up of 4 equal rectangles. Its perimeter is 28 cm. Calculate its area.

Thanks for your help.

May paid $3.40, Sally paid $3.60

Total paid by May & Sally = $7.00 = 7 apples + 7 oranges

So, 1 apple + 1 orange = $1

Sally paid $3.60 for 4 apples + 3 oranges, so 1 apple = $3.60 - $3.00 = $0.60, 2 apples = $ 1.20

Q2. length = 3 x breadth... with this, I think you can solve it

cheers.

For Q2, I'm not able to solve it...

### Re: Q&A - P4 Math

Hi! Thanks for solving. I am very blurred. Not very good in model. May I know why used two boxes?

Actually, my DD solved the first part. But, all the adult kept asking her why 5 units? Said that she cannot use this matter.

As for the other question, how to use 4 x 4 when the question asked rectangle? It will become a square, right?

Hope to hear from you soon.

Thank you

Actually, my DD solved the first part. But, all the adult kept asking her why 5 units? Said that she cannot use this matter.

As for the other question, how to use 4 x 4 when the question asked rectangle? It will become a square, right?

Hope to hear from you soon.

Thank you

tianzhu wrote:Hithmejlfm wrote: Question: Gopal, Jack, Timothy have 60 Stamps altogether.

Timothy has 20 stamps more than Jack. Timothy has twice as many stamps as Gopal.

(a) How many stamps does Gopal have?

(b) How many stamps should Jack give to Timothy so that Timothy would have thrice as many stamps as Jack?

You may use MD.

Draw 2 boxes for Jack.

Draw 2 boxes + 20 for Timothy.

Draw 1 box + 10 for Gopal

5 boxes (5 units )+ 30 ------- 60

1 unit ------ 6

a)Gopal ------- 6+10 ------ 16

b)Timothy and Jack had (32+12) or 44 stamps altogether.

Divide into 4 parts

Timothy ------ 33

Jack -------11

Jack must give 1 (33-32) stamp to Timothy.

Best wishes

- MathIzzzFun
- KiasuGrandMaster
**Posts:**2358**Joined:**Wed Mar 09,**Total Likes:**5

### Re: Q&A - P4 Math

bookwormkids wrote:Hi MathIzzzFun! Thanks for your help!MathIzzzFun wrote:Hibookwormkids wrote:Q1) May bought 3 apples and 4 oranges. Sally bought 4 apples and 3 oranges. Sally paid $0.20 more than May. May paid $3.40 for the fruit. Find the cost of 2 apples.

Q2) The figure shown below is made up of 4 equal rectangles. Its perimeter is 28 cm. Calculate its area.

Thanks for your help.

May paid $3.40, Sally paid $3.60

Total paid by May & Sally = $7.00 = 7 apples + 7 oranges

So, 1 apple + 1 orange = $1

Sally paid $3.60 for 4 apples + 3 oranges, so 1 apple = $3.60 - $3.00 = $0.60, 2 apples = $ 1.20

Q2. length = 3 x breadth... with this, I think you can solve it

For each rectangle, breadth = 1u, length = 3u, perimeter of figure = 2 x (3u+3u+1u) = 14u = 28cm. So, 1u = 2cm

Area of figure = 3u x 4u = 6cm x 8 cm = 48 cm2

cheers.

For Q2, I'm not able to solve it...

### Re: Q&A - P4 Math

Hibookwormkids wrote:Q1) May bought 3 apples and 4 oranges. Sally bought 4 apples and 3 oranges. Sally paid $0.20 more than May. May paid $3.40 for the fruit. Find the cost of 2 apples.

Q2) The figure shown below is made up of 4 equal rectangles. Its perimeter is 28 cm. Calculate its area.

Thanks for your help.

May paid $3.40, Sally paid $3.60

Total paid by May & Sally = $7.00 = 7 apples + 7 oranges

So, 1 apple + 1 orange = $1

Sally paid $3.60 for 4 apples + 3 oranges, so 1 apple = $3.60 - $3.00 = $0.60, 2 apples = $ 1.20

Q2. length = 3 x breadth... with this, I think you can solve it

For each rectangle, breadth = 1u, length = 3u, perimeter of figure = 2 x (3u+3u+1u) = 14u = 28cm. So, 1u = 2cm

Area of figure = 3u x 4u = 6cm x 8 cm = 48 cm2

cheers.[/quote]

Hi MathIzzzFun! Thanks for your help!

For Q2, I'm not able to solve it... [/quote][/quote]

Hi sorry,

I am slow. For Q2, I don't understand. why is length 3u of breath?

- MathIzzzFun
- KiasuGrandMaster
**Posts:**2358**Joined:**Wed Mar 09,**Total Likes:**5

### Re: Q&A - P4 Math

Hijanicelhl wrote: Hi sorry,

I am slow. For Q2, I don't understand. why is length 3u of breath?

cheers.

### Re: Q&A - P4 Math

Hithmejlfm wrote:Hi! Thanks for solving. I am very blurred. Not very good in model. May I know why used two boxes?

Actually, my DD solved the first part. But, all the adult kept asking her why 5 units? Said that she cannot use this matter.

As for the other question, how to use 4 x 4 when the question asked rectangle? It will become a square, right?

For the first question,your DD is right to use 5 units.

As for the second question, a square is a special rectangle.

http://www.mathwarehouse.com/geometry/q ... tangle.php

http://mathcentral.uregina.ca/QQ/databa ... ette1.html

Best wishes

### Re: Q&A - P4 Math

Thank you very much!!!MathIzzzFun wrote:Hijanicelhl wrote: Hi sorry,

I am slow. For Q2, I don't understand. why is length 3u of breath?

cheers.