Couple of sums for you

kPATm · 10 Jan 2012 at 20:24

OK so in these two sums the answer remains the same but there are Zero's missing from the question.

11-11-11 = 989

11-11-11 = 8

MrMoonX · 10 Jan 2012 at 20:38

1 star

neodude · 10 Jan 2012 at 20:42

11-11-11 = -11

kPATm · 10 Jan 2012 at 20:56

I dont think I explained it correctly. The answer will always be

989 for the 1st

8 for the 2nd

you have to find out where to but the zero's in the question to get these answers so I can only manage to get

1100-110-11=988

or

1001=101-11=889

????

mufc802 · 10 Jan 2012 at 20:57

I can do it with 110 - 101 - 1 = 8 but I took out a 1. Is it even possible?

[FnG]magnolia · 10 Jan 2012 at 20:58

Did this come from facebook?

RomanNose · 10 Jan 2012 at 21:00

1000.1-11 -1.1
Second one is harder, just figuring it out.

kPATm · 10 Jan 2012 at 21:04

This is from my 12 year old neice's homework :-0

1000.1-11 -1.1=988 not 989

mufc802 · 10 Jan 2012 at 21:06

kPATm said:
This is from my 12 year old neice's homework :-0

1000.1-11 -1.1=988 not 989

So you can use decimal places?

Zefan · 10 Jan 2012 at 21:06

kPATm said:
This is from my 12 year old neice's homework :-0

1000.1-11 -1.1=988 not 989

Really? I fail to see what method this is teaching her apart from how to try and fail over and over until getting the answer randomly. There's no method to it at all... have I finally reached the age where I can start moaning about the education system :eek:

? Wow. I got old quick.

Nymins · 10 Jan 2012 at 21:08

No one mentioned anything about using decimal places. Vague OP is vague.

Reaper 392 · 10 Jan 2012 at 21:10

ive got 988.999999999... if thats any good:

(1001 - 11) - 1.0000000000001
(insert as many zeros to the last one as you like)

is she supposed to use decimals or not?

RomanNose · 10 Jan 2012 at 21:12

Zefan said:
Really? I fail to see what method this is teaching her apart from how to try and fail over and over until getting the answer randomly. There's no method to it at all... have I finally reached the age where I can start moaning about the education system ? Wow. I got old quick.

Agreed. This is kind of useless and you don't really ever need that technique till A level, where I think you use it for finding roots.
I think that we should really extend gcse for another two years and make sure everyone at least has a decent knowledge in Maths and English.

kPATm · 10 Jan 2012 at 21:13

It doesnt actually mention anything about decimal places in her homework but as long as the answer is

989 for the 1st

8 for the 2nd

then I dont see why not

Greebo · 10 Jan 2012 at 21:16

kPATm said:
OK so in these two sums the answer remains the same but there are Zero's missing from the question.

11-11-11 = 989

11-11-11 = 8

God first is easy isn't it?

1011-11-11 - 989

Tolmekian · 10 Jan 2012 at 21:17

kPATm said:
This is from my 12 year old neice's homework :-0

1000.1-11 -1.1=988 not 989

So the second is definitely possible?

I've tried countless combinations :confused:

Also agree with Zefan, I don't think I'm going to come out of this with a healthier understanding of maths even if I did randomly guess the correct answer.

kPATm · 10 Jan 2012 at 21:17

No Greebo I made the same mistake you hasve to many 1's in the first part

1011

Tolmekian · 10 Jan 2012 at 21:18

Delete

kPATm · 10 Jan 2012 at 21:19

I think its a mistake aswell. Iv been at this since 7 tonight

Greebo · 10 Jan 2012 at 21:19

kPATm said:
No Greebo I made the same mistake you hasve to many 1's in the first part

1011

damn