# Talk

## To ask for help with DS maths homework

(86 Posts)
Mumski45 Sat 15-Oct-16 19:59:25

Even though I have a maths degree!
He is 10 and in year 6. I can find a 'cryptarithm solver' using google but need to explain strategy to him so that doesn't help!

DixieWishbone Sat 15-Oct-16 20:05:52

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DixieWishbone Sat 15-Oct-16 20:06:53

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Mumski45 Sat 15-Oct-16 20:09:22

Thanks Dixie. I tried simultaneous equations but had too many variables. I'm also trying to think like a 10/11 year old.

DixieWishbone Sat 15-Oct-16 20:09:25

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IScreamYouScream Sat 15-Oct-16 20:10:30

Surely not many 10 year olds would have a change of solving that? It's melting my brain a bit.

NothingIsOK Sat 15-Oct-16 20:11:14

Careful Dixie, they are both subtractions.

DixieWishbone Sat 15-Oct-16 20:11:20

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DixieWishbone Sat 15-Oct-16 20:11:57

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DixieWishbone Sat 15-Oct-16 20:13:42

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Rachie1986 Sat 15-Oct-16 20:14:40

Very hard - way too hard for yr 6 I would think. Secondary maths here.

I think G = 2J.. but can't remember where I got that from!

JoJoSM2 Sat 15-Oct-16 20:18:09

The way I'd go about it is to order them from the greatest to the smallest. We know g=0, e is greater then c or I ( c+I=e) and just slot the other letters in one by one until you have all of them in order. Then you'll know what's what.

JoJoSM2 Sat 15-Oct-16 20:19:33

Just be careful about anything being carried over. I don't think the maths is tricky here at all - it's more of an intelligence question.

Mumski45 Sat 15-Oct-16 20:19:35

I am assuming that there is a 'key' to unlocking it.
Not sure if both should be solved together or not.
In addition to the g=2j I got that A-1=F

DixieWishbone Sat 15-Oct-16 20:21:40

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ErrolTheDragon Sat 15-Oct-16 20:25:20

And so j=1,2,3 or 4

Does j=i+1 (in which case j = 2,3 or 4 and g = 4,6 or 8)

Was you ds given no clue how to solve this? Feel like there must be some trick we're missing.

Dilligufdarling Sat 15-Oct-16 20:26:22

J is greater than I so can't be 1.
So that counts 2 out for G as well

Dilligufdarling Sat 15-Oct-16 20:26:50

Cross post!

ErrolTheDragon Sat 15-Oct-16 20:27:00

Scrap most of that, i could be 0

DixieWishbone Sat 15-Oct-16 20:27:24

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ErrolTheDragon Sat 15-Oct-16 20:28:19

Though if i was 0 they'd have left it blank so forget that...

NothingIsOK Sat 15-Oct-16 20:28:41

Not necessarily.

If G<J then (10+G)=2J
If G>J then G=2J

Anyway, it's a horrible exercise, with limited merit as a homework piece. Possibly useful as a class based discussion piece along the lines of "how on earth would you approach this?"

My starting point would be eliminating all the things that can't be zero due to their positions in the values, so J A C F and I

Then deduce A-1=F and J-1=I

Then I'd probably either lose the will to live, or make the deeply clever move of re-writing them as additions to see where that got me

FGDCI
FGHC
---
ABCDE

and

IFGHJ
CDGJ
---
JGAEG

Then I'd go and annoy the maths teacher by asking what the intended learning outcome of this annoying shit is exactly?

Starlight2345 Sat 15-Oct-16 20:29:45

If he is year 6..Not been taught it in school...Send a note he tried didn't know how to do it.

I learned my lesson trying to teach my DS how to do fractions...

NothingIsOK Sat 15-Oct-16 20:30:41

Careful alignment of place values lost in the additions above, but hopefully the idea is apparent.

Anyway, is bollecks, and I wouldn't bother my arse doing it.

BishopBrennansArse Sat 15-Oct-16 20:30:48

How the effing Jeff?

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