Question

Can someone plzz answer this for me "20÷2(5+5)" when I did the problem I got 1 as my answer and someone else say they got 100 as they answer.

Answer 1

I got 1 also

Answer 2

100 is correct :)

Answer 3

Yes using PEMDAS i get 1 also

Answer 4

Multiplication `does not take priority over` division.
You do them left to right.

Answer 5

how about parentheses? ( )

Answer 6

the questions is: what does 2(5+5) represent?

Answer 7

oh ya zepdrix is right it left to right

Answer 8

Parentheses first,\[\large\rm 20\div2\times10\]then division :D

Answer 9

2(10) is not necessarily the same as 2x10

Answer 10

..?

Answer 11

I am with @amistre64

Answer 12

Since when? 0_o

Answer 13

Parenthesis step applies to things `inside` the partheses.
The operation on the outside is always multiplication unless another operator is present.

I'm not sure I agree with you :OU

Answer 14

2(10) might be considered as way to 'group' 2 with 10 under multipication.

whereas 2x10 is just an abitrary placement

Answer 15

2(5+5) \(\neq 2*10\)

Answer 16

if they say, \(20 \div 2\times (5+5)\) then you are right,
But the problem doesn't have \(\times\) sign there.

Answer 17

2(5+5) \(\ne 2*10\)
Ya I have to totally disagree with this ^
I don't see the logic :)

Answer 18

2(10) is a factored from the number 20

2*10 = 20

Answer 19

@zepdrix put the sentence in context, please. I meant 20 \(\div\) before the combo.

Answer 20

2(5+5) is distributive

2*10 is not

Answer 21

^The question below this, could you close? The guy is cheating.

Answer 22

http://math.stackexchange.com/questions/33215/what-is-48%C3%B7293

I guess there is just too much ambiguity in the notation :)
Oh well

Answer 23

\[20\div 2*(5+5)\cancel {\equiv}20\div 2(5+5)\]

Answer 24

I got completely ignored ;-;

Answer 25

saying:"the question below this" is equally ambiguous ... there are at beast 4 years of questions below this one ... and bumping changes the order.

Answer 26

Could I link ti then?

Answer 27

because you say something not right. He posted his result and his friend result, then ask for confirming.

Answer 28

posting in another persons session, off topic of the session, is considered spam .. and rude. the report abuse feature should be used instead.

Answer 29

o um...sorrry

Answer 30

https://www.wolframalpha.com/input/?i=20%C3%B72%285%2B5%29
https://www.wolframalpha.com/input/?i=20%C3%B72*%285%2B5%29

Answer 31

But i have no idea how to report?

Answer 32

wolfram is not much proof here ... it has to conform itself to an interpretation.

Answer 33

lol

Answer 34

the questions rests on how we are to interpret the otherwise ambiguous notation of: 2(5+5)

is it grouping 2 and (5+5), or is it just multiplying 2 and (5+5)

Answer 35

I'm looking for an answer and you guys going back and fourth about other things

Answer 36

It's multiplication,
grouping is the same as multiplication,
but the 20 and division breaks the group that you're thinking of.

Answer 37

So the correct answer is 100?

Answer 38

I think you all are making this harder then it really is

Answer 39

grouping is not the same as multiplication. grouping comes before multiplication

Answer 40

@reymishia the question is written poorly,
we can't give you a clear answer I'm afraid :)

Answer 41

I guess I'm not sure what you mean by "grouping" then...

Answer 42

I still think the answer is 100