Maths in year 5

[Ivykaty44]

help

I really am not understanding the maths homework and my dd is so scared of her teacher that she will not ask.

The jomework sheet is not easy to understand and it is doubling and halfing.

How are they supposed to do this? Is it just a case of division and muliplication? Or is it another sytem of maths. There is no division sign or multiplication signs on the sheet it just says Half and Double and then a list of numbers, some of the numbers are not whole numbers.

dd is in year 6, she says it is division and multipilication
for 22.5 for example you would double the 22 =44 and then the 0.5 = 1 total 45

My DD is in Yr 5, they do seem to get quite a few 'problem' sheets with things expressed in words rather than signs now. It sounds like maybe you're a little scared of the teacher (or maths) yourself and think its something a bit more complicated than its meant to be.

Double is just 2x ; half is divide by 2.

If you want to post any specific examples which are troubling you both, I'm sure theres plenty of folks can help simplify.

Good luck!

Well when I was at school it was just siomple sums - now they do such a complicated adding up system that i just get completly lost!

I used to have two numbers on top of two numbers for ex

22
44

Then you added the 2 and the 4 = 6 and then again coming downwards to get 66

so am very old fashioned -

Now they have to take the 44 away and write down at the side then the 22 and write on the side then split the numbers up, then tbh I get lost...

So multiplication I have no idea how they do it now or division.

So for doubling I would just add the two numbers together

22.5

I would add

225
225

to get 450 and then put the decimal point back in.

That to me would be the simple way.

Then I would divide say 76 by 2 to get half

But how do I show my dd to do these sums?

Let her show YOU how to do it, they have actually brought back in the old way again so my dd 1 knows both ways and by the time dd2 leaves primary she will know both too.
Its called CHUNKING or PARTITIONING if you want to google it for an explanation.(or more confusion)

this is a great book to have in the house

Hi thanks for the book recomnation I shall have a look at that.

I have asked her to show me how she is being shown at school - that is the problem though, she doesn't know how to do it and gets lost in the process. Today she was doing multiplication and the teacher showed the class how to do it and she got in to trouble for setting out the sum wrong on paper, apparently the whole class was getting it wrong and so where all kept in for a few minutes at lunch time. This is why we are struggling - she is to scared to ask for getting into trouble. I want to be able to show her at home so she keeps up with her maths but it is a struggle.

My maths is ok in a work enviroment, mental arithmetic and making the books balance ect but not so hot when it has to be school maths on paper.

You are not alone, its not easy to see them doing all that mucking around when to US a simple sum is all it takes.
I go to an adult maths class(free at adult education centre) to keep one step ahead of dd, its nice having a maths teacher on tap.
heres a website which might help

thank you I have looked at the wesite and booked marked it.

I understand the multiplication, I would do roughly the same in my head, got the right answer when I looked. So am happy with that as I can explain that ok and we can practice.

Shall have to work on the division grid and print it out might help.

Do they get to use the grids in class,do you know?

again thank you.

My dds dont use the grid with dots, but do use blank boxes with sections(scroll down on the grid bpage and you will se what I mean)

I am a Y5 teacher at the mo.

Doubling and halving - they need to know doubles and halves up to 50 by heart.

For larger doubles/halves that need to be worked out, they would use partitioning, eg:

62 doubled

60 x 2 = 120
2 x 2 = 4

120 + 4 = 124

or

78 halved

70 divided by 2 = 35
8 divided by 2 = 4

78 divided by 2 = 39

Hope this helps.

Oh thank you - that is great Feenie.

See when we are in the car and we do sums and change (she likes to add up the sweets at the newsagent and then give the change from a £1), this is how I get her to do it in her head.

I was a barmaid in the good ole days before electronic tills (well the boss was to stingy to buy one!) so my mental arithmatic improved.

It is a mental maths objective.

Glad to help

Ahh

So us playing the change game i.e.

two mars bars cost 35 p and a packet of polo's for 12p add them up and give mummy the change from a £1

We change the sweets each time and sometimes add the sun or the telegraph into the shop.

This will help.

I havn't got her to understand the mph game yet but will work on that one.