Maths supplements new challenges :)
Try me ... I know you can do it :)
There are 4 rows of chairs with 6 chairs in each row. Miss Li wants to rearrange all the chairs to form a square. She wants the same number of chairs on each side of the square. How many chairs must she put on each side of the square?
Think through which method would be the most efficient method to solve this question. Comment on it and if you like you may set parallel questions for your friends to solve. Have fun :)
Mrs R
Most efficient method: Drawing
ReplyDeleteMy answer is 7. Am I correct?
Yay... I got first comment award.
Yup! My answer is 7 too.
DeleteMy method: Number Statements (It is the same as the Drawing method)
4x6=24(total no. of chairs)
24-4=20 (Note: I'm taking away 4 because there are 4 corners in the square.)
20/4=5 (Note: 4 because there are 4 sides)
Each side has 2 corners.
Each corner has 1 chair.
Each side=5
5+2=7
Answer: Miss Li must put 7 chairs on each side.
Parallel question:
ReplyDeleteThere are four rows of sweets with five sweets in each row. Glenda wants to rearrange them to form a square before eating them. She wants the same number of sweets on each side of the square. How many sweets must she put on each side?
Is the answer 6?
DeleteYup :-)
Delete4 x 5 = 20
Delete= Total sweets
20 / 4 = 5
4 sides -> 4 extra
4 / 4 = 1
1 + 5 = 6//
◕‿◕
^.^
my answer:6
Delete6
DeleteAdam sorry but I don't understamd yours! My is this:
Delete4x5=20
20-4=16
16/4=4
4+2=6
it is 6
DeleteFor my working, I found the Total first
Delete20 x 5 = 20.
Next, I find the overlapping sweets at the four edges
20 / 4 = 5
Then, I divide them into each edge.
4 / 4 = 1
Time for the Magic!! For a side, I add the sweets + one overlapping sweet.
1 + 5 = 6//
◕‿◕ Smileys!!
I found it!!
Deleteit is 6!!!
Thank u Nadine for your enthusiasm :)
ReplyDelete=)
ReplyDelete7 chairs by drawing like Nadine
ReplyDeleteQ:
ReplyDeleteThere are 2 rows of potted plants with 8 potted plants in each row. Jacklyn wants to rearrange them to form a square. She wants the same number of potted plants in each side of the square. How many plants must she put on each side?
Is the answer 5?
DeleteMy answer is 5. Am I correct?
DeleteMine is 5 too. :D
DeleteMine's 5
Delete5 is the correct answer & I found a quickier method:
Delete2x8=16-> no. of potted plants
16-4=12-> - of all corners's potted plants
12 divided by 2=3-> no.of potted plants in the middle
3+2=5-> no. of pots in the middle
This is the best method to me! Easy & quick! :)
How can 3 be the quotient of 12/2?
DeleteI thought the method was like this:
2x8=16
16-4=12
12/4=3
3+2=5
. .
U
Sorry! My mistake! Was hurrying to type out my method cuz need the loo! Guess I wrote wrongly by mistake! My working is like what u wrote!
Deleteanyway, is divide sign this /?
Deleteyes,Ginwen.My answer is 5.
Delete2 x 8 = 16
Delete16 / 4 = 4
4 / 4 = 1
1 + 4 = 5
◕‿◕ Smileys !!
Adam PLEASE teach me to do SMILEYS! PLEEEAAASE! ~_~
DeleteI copied it from another website o.O sry.
Deletewhich website?
Deleteyoutube? lol ◕.◕
DeleteClever :) thank u :)
ReplyDeleteI used 4 simple number statements to solve this question. If the numbers used were bigger, then it would take a longer time to solve this question. But since the numbers used were smaller, I used the drawing method as my method 2.
ReplyDeleteThere are 7 chairs in a row
ReplyDeleteMy answer is 7.
ReplyDeleteMy answer is 7.
ReplyDeleteMy Question: Evan put 5 rows of soft toys with 8 soft toys on each side. He then wanted to rearrange all of the soft toys to a square with the same number on each side. How many stuff toys there will be on each side? :3
ReplyDelete5 x 8 = 40
Delete40 / 4 = 10
4 extras -> 4 / 4
-> Extras for a side
-> 1
10 + 1 = 1 side
= 11//
5x8=40(total no. of stuffed toys)
Delete40-4=36 (4 because of the corners)
36/4=9 (4 because of the 4 sides)
9+2=11
Answer: There would be 11 stuffed toys on each side.
5x8=40
Delete40-4=36
36/4=9
9+2=11
Ans:11
Yes! The answer is 11. Got it correct! Job well done! ^_^
Delete5x8=40
Delete40-4=36
36/4=9
9=2=11
11 toys
Yup! 11 is the answer! :D
Deletemy answer is 7.
ReplyDelete~Madhu~
:D
Ans:7
ReplyDeleteCHEN JING
My answer is 7
ReplyDelete7 chairs.
ReplyDeleteMy answer is 7 chairs.
ReplyDeleteThere are 6 rows of books with 12 books in each row. Miss Li wants to rearrange all the books to form a parellelogram.(I hope it is the correct spelling). She wants the same number of books on each side of the parellelogram. How many chairs must she put on each side of the parallelogram?
ReplyDeleteClue: Parallelogram has 4 sides.
I thought parallelograms didn't have equal sides?
Delete(Not trying to be rude)
Refer to this link for explanation of Parallelogram:
Deletehttp://en.wikipedia.org/wiki/Parallelogram
Thanks Wei Xuan !
Deleteis the answer 19?
DeleteA parallelogram does not have 4 equal sides. Maybe you could change the question a little by saying that the length of a parallelogram is twice as long as its breadth. Or something else?
Delete. .
U
Ok, I'm changing my question:
DeleteThere are 6 rows of books with 12 books in each row. Mdm Hernie wants to rearrange all the books to form a parellelogram.(I hope it is the correct spelling).The length of the parellelogram is thrice as long as its breadth. She wants the same number of books on each 'unit' of the parellelogram. How many books must she put on each 'unit' of the parallelogram?
is it 9?
DeleteFor your info, Square and Rectangle are also Parallelogram. Please read carefully under Characterizations for the link:
Deletehttp://en.wikipedia.org/wiki/Parallelogram
My working:
Delete6x12=72 (Total no. of books)
Length-3u
Breadth-1u
(3+1)x 2 =8 (no. of units)
72/8=9 (no.of books on each unit)
She must put 9 books on each 'unit'.
Yes, it's 9
Delete7 chairs.
ReplyDeleteI GOT TRICKED!!!
4 x 6 = 24
Delete24 / 4 = 6
There would be 4 extras
4 / 4 = 1
6 + 1 = 7//
TADAAA!!!!
I got tricked at the "24/4=6" part and I assumed that it was the end of the question. But I remembered that there were 4 extras on every side of the square.>.>
DeleteI was also tricked.
DeleteBy a tricky trickster question.
DeleteO_o
ans:7
ReplyDeletedrawing method.
A gardener had 6 rows of seeds with 8 seeds in each row. She wanted to rearrange the seeds to form a rectangle which length was twice as long as its breadth. How many seeds would be at each side of the rectangle??
ReplyDelete(Hint : 6 units)
is it: lenght 17 breath 9
DeleteThere would be 16 seeds on each of the lengths of the rectangle. And there would be 8 seeds on each of the breadths of the rectangle.
DeleteMy working:
6x8=48
48/6=8
Breadth=8 (1 unit)
Length=8x2
=16 (2 units)
Check: 16x2=32 (lengths)
8x2=16 (breadths)
32+16=48
Breadth:8
DeleteLength:16
Ximing i think you miscalculated. It is Length 16 and Breadth 8. Maybe can try again.
Delete◕‿◕ Smileys!!
6 x 8 = 48
Delete48 / 6 = 8
B8//
8 x 2 = 16
L16//
My answer is 7
ReplyDeleteI got 7 using adam's method
ReplyDeleteThis comment has been removed by the author.
ReplyDeletemy answer is 7.
ReplyDeletemy answer is 7.
ReplyDeleteMs R I found an Albert Einstein phrase!!
ReplyDeleteAny intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction.
~AlbertEinstein
I do not understand the meaning of this quote.
Delete_ _
. .
L
U
I don't mean to discourage you but I do not understand what the quote means....:l
Deletelol it is a random phrase LOL
Delete7
ReplyDeletemy answer is 7 <(")XD
ReplyDeleteHere's a question I've created:
ReplyDeleteSally has invited her friends over to her house for her birthday party tonight. She has invited 16 friends. So, she needs to arrange tables and chairs for them. Only 4 people can seat around each table. So, how many chairs does she need to arrange if all the tables are lined up together?
Hint:
if two tables...
:-)are joined... _____
:---)together...|__|__|
There cannot be chairs in the middle!
(* As shown in my diagram above)
(Ok! I know it is ugly but still I think it is clear enough for you to understand)
6?
DeleteNope! But you are close! Good try! Can you share your working?
DeleteIs the answer 7?
DeleteYes! Please share your working!
Delete_ _
. .
L
---
U
Caption: A man with moustache
i got 6 by drawing but why 7??? :(
DeleteMy Method:
o o o o
* _ * * _ * * _ * * _ *
o l_l o ol_l o o l_l o o l_l o -> haven't
o o o o arranged yet
o o o o
_ _ _ _
o l_ll_ll_ll_l o -> take way all middle chairs
o o o o ( all those with stars) which
is 6.
ARGH! Forget it! so messy! :( >_<
Deletelol nvm
DeleteWhy don't you use number statements?
Delete◕ ◕
U
yup!
Delete1 table->4 people
Delete2 tables->7 people
3 tables->10 people
Keep adding 3
So: 4,7,10,13,16
Wait, stop! I have something to ask. If there were 16 people, wouldn't there be 16 chairs? No offence!
My working:
DeleteEach table has 2 chairs. But the tables at the ends would have an extra 1 chair.
Tables at the ends: 3 chairs
Tables in the middle: 2 chairs
So,
16-(1+1)=14
14/2=7 (taada! that's the answer)
Or
16-(3+3)=10
10/2=5
5+2(3->1 table + 3->1 table)=7
Do you understand? :D
You may want to draw my method on your white board to check my answer (if you are kinestatic person).
Sabarna,
DeleteI think you should tell us what shape is the table.
It might be a circle, a square or a triangle?
Hasha Iman
o__O
Mrs Roman, I found a website full of albert einstein quotes that(some) are easier to understand. You might want to use it.This is the URL.
ReplyDeletehttp://www.brainyquote.com/quotes/authors/a/albert_einstein.html
7 chairs
ReplyDeleteMy answer is 7 chairs.
ReplyDeleteMust we write our workings??
ReplyDeleteNo! You should type your working! :O
DeleteMy ans is 7.
ReplyDeleteMe answer is 7
ReplyDeleteHasha Iman
o__O
7 chairs
ReplyDelete