Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#651 2013-03-19 04:30:53

SteveB
Member
Registered: 2013-03-07
Posts: 530

Re: Mandy Jane's Corner

Right. I kinow what you mean by that and you may well have put the right number at the top, but
it is a good idea to try to avoid putting something like " 9 x 9 = 1 " because although it is indeed 1
that we are trying to get here strictly speaking 9 x 9 is 81.

You can probably see that the answer at the top becomes:   0  8  3  1    so the answer is  831.

Shall we try a multiplication for a change how about  683 x 6 ?

First of all how should we lay out this multiplication ?

Offline

#652 2013-03-19 04:35:04

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

i have to nipm out to the shops so will send it later tonight around 7.00pm ok?

Offline

#653 2013-03-19 04:37:11

SteveB
Member
Registered: 2013-03-07
Posts: 530

Re: Mandy Jane's Corner

Okay. I have made a few notes on some multiplication for you to try they are:

683 x 6 ?

781 x 3 ?

687 x 7 ?

See you at 7pm, I might be a little late for that but not by much. Bye

Offline

#654 2013-03-19 06:53:44

SteveB
Member
Registered: 2013-03-07
Posts: 530

Re: Mandy Jane's Corner

Actually just to correct that last bit I am early. So ready when you are.

Offline

#655 2013-03-19 07:16:21

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

Hi steveb mandy here just a quick message to say iam sorry but have to go out so can't be on here. Tonight but will be inherent tomorrow at 2.00pm. Ok will do the times sums you lecture me ok? If you want to send me an email with some work to do you can ok?

Offline

#656 2013-03-19 22:48:15

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

Hi bob bundy mandy here just wondering how you think I am doing with my maths? Send me a message back please?

Offline

#657 2013-03-20 00:56:09

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

Hi mandy here dose anyone know anyone called bobmill or not if so let me know please? Like now please?

Offline

#658 2013-03-20 01:04:40

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,429

Re: Mandy Jane's Corner

Yes, I know bob mill. Do you know him?


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

#659 2013-03-20 01:07:34

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

Now I didn't know him just wondered why him name came up on computer then? If he wants to take to me that is fine with me? Send message back now please?

Offline

#660 2013-03-20 01:12:06

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,429

Re: Mandy Jane's Corner

He is gone and not likely to come back.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

#661 2013-03-20 01:17:38

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

Ok bobbym thanks for that

Offline

#662 2013-03-20 01:18:36

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,429

Re: Mandy Jane's Corner

Pardon me for asking but did he talk to you?


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

#663 2013-03-20 02:19:04

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

Nohe did not just the name came up on the computer ok? Why do you ask? Just wanted ok?

Offline

#664 2013-03-20 02:20:34

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,429

Re: Mandy Jane's Corner

I wanted to know if he was bothering you.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

#665 2013-03-20 02:23:43

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

Is he bad news then? If so if he comes on here again I will not talk to him ok? Send me message back now please?

Offline

#666 2013-03-20 02:27:18

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,429

Re: Mandy Jane's Corner

He might sneak in. He is a spammer. Do not worry about him,.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

Offline

#667 2013-03-20 02:34:10

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

Hi steveb mandy here i have done the sums you left me ok?

  2 3         
  2 7
_____
1 5 1
4 6 0
_____
6 1 1
_____

    3 6
    3 4
______
1 4 4
1 0 8 0
______
1 2 2 4
______

      1 6 7
       2 5 4
     ______
       6 6 8
     8 3 5 0
3 3 4 0 0
_________
4 2 4 1 8
________

Sorry I. Took so long are these right?

Offline

#668 2013-03-20 02:49:07

SteveB
Member
Registered: 2013-03-07
Posts: 530

Re: Mandy Jane's Corner

mandy jane wrote:

Hi steveb mandy here i have done the sums you left me ok?

  2 3         
  2 7
_____
1 5 1
4 6 0
_____
6 1 1
_____

That one is wrong, but it is not too far out. You have I think made a minor error with either
the carry of  3 x 7 = 21 and carried a "1" instead of "2". Or maybe you accidentally put in
7 x 2 as 13 rather than 14. The number at the top in the middle bit you have put as " 1 5 1 ".
What did you carry at each stage in this bit ? Do you want to try that bit of it again ?

    3 6
    3 4
______
1 4 4
1 0 8 0
______
1 2 2 4
______

Very good. That is correct.

      1 6 7
       2 5 4
     ______
       6 6 8
     8 3 5 0
3 3 4 0 0
_________
4 2 4 1 8
________

Very good again, although you have written them a bit out of alignment on the screen you
have got all of the middle bits correct and added them correctly.

So you may wish to just look at the first one and see the mistake you made in the first middle number.

Offline

#669 2013-03-20 02:59:37

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

2 3
    2 7
______
  1 6 1
  4 6 0
______
  6 1 1
______

Am I right now?

Offline

#670 2013-03-20 03:03:48

SteveB
Member
Registered: 2013-03-07
Posts: 530

Re: Mandy Jane's Corner

The " 1 6 1 " bit is now correct. Well done.

Now because the answer depends upon this bit being correct you should really redo the addition.

In other words what effect does this have on the final answer ?

Offline

#671 2013-03-20 03:06:45

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

The answer is 621 is that right?

Offline

#672 2013-03-20 03:08:08

SteveB
Member
Registered: 2013-03-07
Posts: 530

Re: Mandy Jane's Corner

Yes well done. Now what topic do you want to do ?

Multiplication ? Division ? Or the next topic ? (If so which one ?)

Offline

#673 2013-03-20 03:13:37

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

Could we do the next topic and then come back to multiplication and division please?

Offline

#674 2013-03-20 03:14:59

SteveB
Member
Registered: 2013-03-07
Posts: 530

Re: Mandy Jane's Corner

Right now according to what I have read on something you wrote to me about earlier your next topic
is "Factors and Multiples". Is that the one that you consider to be next. Or is there something else ?

Offline

#675 2013-03-20 03:21:14

mandy jane
Member
Registered: 2010-09-23
Posts: 882

Re: Mandy Jane's Corner

the next one i would like to do is percentages please if that is ok with you?

Offline

Board footer

Powered by FluxBB