Q&A - P4 Math

[kwcllf]

Laura02:

kwcllf:

[quote=\"Jamesbond\"]http://i49.tinypic.com/2vb8y2s.jpg\">


Pl help.

Area of floor = 25 x 20 = 500

Area of a tile = 5 x 4 = 20

No. Of tiles = 500/20 = 25

I think it's

Area of floor = 500 X 400 (cm)

Area of tile = 25 X 20 (cm)

No. Of tiles = 500 X 400
------------
25 X 20
= 400[/quote]Sorry, answer is 400.

I have read the question wrongly and mixed up the dimension.

[Jamesbond]

Errors are common.....Never mind..... :imcool:

[Laura02]

Kwcllf, I’ve made such mistakes before too. Just look at the earlier pages. Good thing I’m not being marked.

[racoon12]

I need help on this math question. TIA.


A pet shop has some rabbits and some turtles. 2/9 of the animals are rabbits. There are 30 less rabbits than turtles. How many animals are there in the pet shop?

[Charnic]

racoon12:

I need help on this math question. TIA.


A pet shop has some rabbits and some turtles. 2/9 of the animals are rabbits. There are 30 less rabbits than turtles. How many animals are there in the pet shop?

7/9 of the animals are turtles. So 7-2 = 5
5U = 30
U = 6
Total U is 9, so 9*6 is 54 animals.

[Jamesbond]

A rope is 15 m long. Tan cut 9 pieces of rope from it, each 2/3 m long. What is the length of the rope left in metres?


Pl explain.... :?:

[BigDevil]

Jamesbond:

A rope is 15 m long. Tan cut 9 pieces of rope from it, each 2/3 m long. What is the length of the rope left in metres?


Pl explain.... :?:

Why are you having problem with this question :?

Isn't this just simply a multiplication to get total length of 9 pieces of rope, then subtracting that from original length to get the remaining length??

[Jamesbond]

BigDevil:

Jamesbond:

A rope is 15 m long. Tan cut 9 pieces of rope from it, each 2/3 m long. What is the length of the rope left in metres?


Pl explain.... :?:

Why are you having problem with this question :?

Isn't this just simply a multiplication to get total length of 9 pieces of rope, then subtracting that from original length to get the remaining length??

I worked and got the answer as 9m. But the answer in book says 5m..the working given as
15/3=5
5*2=10
15-10=5m....so now I am :roll:

[BigDevil]

Guess the book is wrong. What book is that?

[Jamesbond]

BigDevil:

Guess the book is wrong. What book is that?

My friends tuition teacher had corrected her note book...with this working given.....So I trusted their answer shud b correct.....May be just a mistake what the teacher did...
If u say my ans 9m is correct then I shall :celebrate: Pl confirm it.....