year 3 homework ???? (8 year olds)

[ken1307]

7x3=21
6x4=24
5x1=5

that lot x2 = 100

 

[maddness]

lol makes me feel a little better

year 3 homework 7-8 year olds

its not just one question its a like a book of them kinda questions
we've done most of them

heres one we did which was one of the easier ones lol

If there are 196 legs and 126 eyes at the dog show.
How many people and how many dogs are present?

All the people and all the dogs at the show have the
normal number of eyes and legs

 

[Scrutinize]

3*7 = 21
4*6 = 24
1 *5 = 5

50*2 = 100

edit dag namit got beaten to it didnt refresh as was working out

Its really easy, to make 100 as a multiple from that you have a choice of 20*5, 25*4, 50*2 or 100*1

Looking at the numbers you can only get to 50*2 then work backwards

 

[Ripper]

7x3=21
6x4=24
5x1=5

that lot x2 = 100

The way its laid out makes it look like multiplying each of initial three answers should equal 100, each one seperately. Doesn't clearly state that you need to add the three answers together.

 

[dotnetwill]

7x3=21
6x4=24
5x1=5

that lot x2 = 100

Are you 8?

 

[Burnsy2023]

7x3=21
6x4=24
5x1=5

that lot x2 = 100

But there is no addition notation. I thought each individual statement only had three terms.

Edit: beaten by ripper

God help the maths teacher if that was my child.

Burnsy

 

[ins0mn1ac]

If there are 196 legs and 126 eyes at the dog show.
How many people and how many dogs are present?

All the people and all the dogs at the show have the
normal number of eyes and legs

Dont remember having homework like that in my school days, and it wasnt all that long ago!

 

[Deiwos]

The way its laid out makes it look like multiplying each of initial three answers should equal 100. Doesn't clearly state that you need to add the three answers together.

Admittedly it's not that clearly laid out, but I thought it was fairly obvious that you had to get each answer, then add, then multiply again.

If that isn't the case, well, I can't see it being possible.

 

[Scrutinize]

The way its laid out makes it look like multiplying each of initial three answers should equal 100, each one seperately. Doesn't clearly state that you need to add the three answers together.

The big bracket means the sum of so not needed in the working out so by assumption its there, of course you need to understand the notation.

 

[ken1307]

But there is no addition notation. I thought each individual statement only had three terms.

thats what I thought too !!! and that would be impossible to solve it, I have my A-Levels Maths to back me up

@mrk1@1: no, the big curly bracket = "and"

 

[Ripper]

The big bracket means the sum of so not needed in the working out, of course you need to understand the notation.

Ah right. Those kids are ******

 

[maddness]

yes heres me thinking they can only be multiplied with each other

 

[DalGurak]

4x6 = 24
3x7 = 21
1x5 = 5

SUM = 50 x 2 = 100

All good?

Edit: Owned, you guys reply far too fast.

 

[Gaverick]

7x3=21
6x4=24
5x1=5

that lot x2 = 100

Yep that's the way I got, took a bit of thinking though! Not sure if I could do it at 8 without sitting for hours.

 

[moody]

1x5
3x7
6x4

With the x2 at the end. This is assuming the first three sums are added together.

 

[Burnsy2023]

The big bracket means the sum of so not needed in the working out, of course you need to understand the notation.

Since when? Sigma has always traditionally been used for summation.

Burnsy

 

[Azagoth]

EDIT:

4 x 6 = 24 }
3 x 7 = 21 } = 50 x 2 = 100
1 x 5 = 5 }

What he said!

 

[Scrutinize]

Since when? Sigma has always traditional been used for summation.

Burnsy

Sorry was dumbing it down...getting lazy in my 10pm posting age If I said and, i would probably have felt the need to explain the 'and'

 

[Burnsy2023]

thats what I thought too !!! and that would be impossible to solve it, I have my A-Levels Maths to back me up

I have degree level engineering maths under my belt. I can easily do the Euclidean proof but that stumped me.

Burnsy

 

[JIM_BOB7813]

Since when? Sigma has always traditionally been used for summation.

Burnsy

Yeh, braces are used for groups/sets
http://en.wikipedia.org/wiki/Bracket#Curly_brackets_or_braces_.7B_.7D