**Please help..Maths..simple division etc!**

[JodieWodie]

Hi

Hoping somone can help us.
My daughter has loads of Maths homework. brought it home tonight, has to be in by tomorrow. I feel it is too much for one night. She has weekly homework that is about a third smaller.
Some of this maths stuff is really complicated, (I can actually help her with that part), some is well.. simple

I do division and subtraction in my head. But schools need working out etc... on the sheets
(Example... 18 divided by 3..easy. How the hell do you do that in one of those lil table thingies with a division sign next to it !!?? Or 200 - 38 )

She can't remember how to do it. And it is soooooo long since I ever did it! She can do the adding etc, but the division and subtracting has her confused (and me)
I mean 'borrow from here..and there'
WTF ?
Anyone help?
If she doesn't do it, she gets kept in tomorrow

Thanks ever so !!

JO xx
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Courage doesn't always roar. Sometimes courage is the quiet voice at the end of the day saying, "I will try again tomorrow"

[Mr.Everready]

Carry the ten.
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the undemocratically unelected mod of the Scottish section

[Mr.Everready]

https://www.sssoftware.com/freeworksheets/subtraction.html

https://www.sssoftware.com/freeworksheets/division.html
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[JodieWodie]

Thanks.. but don't really understand it

Numbers are crossed out but I can't figure out why. And the division techniques shown there are what I used to do at school, but she has learned it differently

She is so upset, and I can't help, and that is painful

I wish I could help her
It is like most things, if you don't do it a lot, it is like gobbeldy gook
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Courage doesn't always roar. Sometimes courage is the quiet voice at the end of the day saying, "I will try again tomorrow"

[Ork12]

200-38 right then gimme a mo I'll try knocking something up in paint!

[Ork12]

Right then, Ill explain first, if you want to take 38 from 200 write it so 38 is below 200. Now you work vertically right to left. So you start with 0-8 (but you don't want a negative number). So what you do is cancel/carry. So put a cross through the 2, and change it to a one.

This gives you ten tens, so put a 1 next to the middle 0.
Now to put a cross through the middle 0 with the 1 next to it and replace it with a 9. This gives you 10 singles to use, so put a 1 next to the right hand side 0, thus making it a ten.

From this you can do 10-8, then the middle one 9-3 and then the 1 stays the same as it isn't having anything subtracted from it

Is this any help? do you understand any bits of it/want me to re-explain bits of it?
Cheers
AlexG

[Mr.Everready]

Subtraction look at this page https://www.sssoftware.com/freeworksheets/sub6s.html

Number 1 is 626 - 238

You cannot take 8 from 6 so you add a 10 making it 16. So 16 - 8 = 8. The ten you used now comes from the next line across which is a 2 ( 2 tens ) thats why its showing a 1 in red. You cannot take 3 from 1 so must add a 10 again making it 11. 11 - 3 is 8. Again the 10 youve added must come from somewhere so its the next figure to the left ( hundreds column ) so one away is 5. So 5 - 3 =2.
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[cheekie monkey]

Have a look at this

https://www.aaamath.com/div55-div4x2.html

[Drew]

i never use to do it like Ork says

I did it like below (again a paint drawing )

Again starting from the right, you cant take 8 from 0, so you add a 1 infront of the 0 to make 10. As you have added a 'ten' to the 1st number, you must add a 'ten' to the second, you do this by crossing out the 3 and changing it to a 4.

You can then do the 10-8 on the right.

Next column, you have 0-4 - again you cant do this, so you add another 1 before the o 'so you have added a 'hundred' so you must add a hundred to the lower one

10-4 = 6 in middle row

2-1 in the left row

[Ork12]

My way has the Mrs forestor official A2 Level mathmatics stamp of approval But I guess both ways work

[JodieWodie]

Thanks for all the help, but we just aren't getting it
We are short of time,... I havent done dinner yet, she is hungry.. I have 2 hours of working from home to do yet, we are both exhausted
I am going to write a note to school tomorrow explaining
It's ridiculous


The DIVISION one is the biggest hurdle
Anyone got a quick solution

JO x
____________________
Courage doesn't always roar. Sometimes courage is the quiet voice at the end of the day saying, "I will try again tomorrow"

[Drew]

dividing....

You draw it as below in pic.

You try to divide the number by the 1st one. If it divides, you write by how many, (if it doesnt, you write a zero, and carry the number over) if there is any left over from the devision, you put in in front of the next number, as you see in the 2nd example.........


2nd example

3 dont go into 1, so carry the 1

3 goes into 17 5 times, carry the 2 remaining (5x3=15, 2 left over)

3 goes into 21 7 times

[Ork12]

Just work it out in your head n say your clever and working out is below you, tis what me n my mates did for a few years

[Drew]

[Mrs Kickstart]

Hi,

You need to be carefull here as if you try to teach here a different way to the school your daughter will be very confused ! Not all schools tech it the same.

There is no point in doing it for her as she need to lean how herself. I would write anot saying she does not know how and neither do you so could not help her and arrange to see the teacher to find out how they teach it so you can help her.

Regards
C
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[TheShaggyDA]

Just ask her "if you have 200 monitors and you've drawn on 38 of them, how many are still useable?"
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[JodieWodie]

[8316]

just out of interest, how old is your daughter?(what year is she in?)
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[syl]

[stinkwheel]

Ok, I'll stick my oar in too.

I wouldn't have thought they'd need working for 18 divided by three, you should know that anyway and just write the answer... Unless they don't teach kids their times tables any more, in which case I think I'll have to move to another country before that generation reaches an employable age.

Here's how I was taught (subtraction to follow):

[stinkwheel]

Subtraction. I still do it this way to work out the mileage for my car expenses.

[flat spot]

Excellent work Stinkwheel. 1 gold star.

[Mrs Kickstart]

Hi,

Stinkwheel, sadly if they are like our local school they use far more convoluted methods now for both division and subtraction.

Regards
Charlotte
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[JonB]

Really Charlotte? That's how I was taught at Primary about 10/15 years ago. Feck that's ages.
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[WildGoose]

as far as i can work out, they arent teaching times tables anymore

preferring to opt for getting the kid to draw out dots and then circle them into groups

then count the total number of dots/blobs its the longest winded and most ridiculous way i've ever seen, but thats what they seem to be doing these days

personally i thought there was nothing wrong with learning times tables with weekly tests, once you know up to 12x12 its surprising how much you can work out in your head

ask a kid today was 6x8 is and they will need to draw out dots for you....
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