Which one is right?

[easy rider]

That's what is great about this forum, anyone can argue about anything!

True! You can argue, but does that make it right? I get that quite often with my students, and if they are correct, I will change it. If not, they may have to do some reading.

 

[AustinN4]

You may be surprised how many high school graduates that would stump.

Like I said, they should be recycled to the 5th grade.

 

[easy rider]

Also I would like to add, left to right doesn't really apply to math as much as the order of the problems are solved, meaning: Parentheses first, multiplication or division (whichever is from left to right first) is equated next and addition or subtraction (whichever is from left to right first) is equated last.

 

[Dawico]

Also I would like to add, left to right doesn't really apply to math as much as the order of the problems are solved, meaning: Parentheses first, multiplication or division (whichever is from left to right first) is equated next and addition or subtraction (whichever is from left to right first) is equated last.

True but there lies the issue. Inside the paranthesis is first. Once inside the parenthesis is solved, the parenthesis themselves become a standard multiplication problem and left to right applies.

 

[easy rider]

True but there lies the issue. Inside the paranthesis is first. Once inside the parenthesis is solved, the parenthesis themselves become a standard multiplication problem and left to right applies.

Yes. For example: 1+5X10(1+3)= 1+5X10X4= 1+50X4= 1+200= 201

 

[BRD@66]

For me, the answer in the OP is one, not nine.

 

[easy rider]

For me, the answer in the OP is one, not nine.

In an alternate reality maybe.

 

[seeker_two]

The answer is obviously .45>9.

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.357>.45.>9

I can do math out to three numbers.....

 

[Davetex]

BR549.....that is all.

 

[Southpaw]

Anyone that needs a calculator to solve that problem needs to go back to the 5th grade.

I finally passed 4th this year, so I'm looking forward to it.

 

[jrbfishn]

You just wait. I had to do summer school after 5th grade.

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[Dawico]

You just wait. I had to do summer school after 5th grade.

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Is that when you gave up on it?

 

[robertc1024]

A man's gotta know his limits.

 

[Tcruse]

FYI -
windows 10 calculator forces "X" operator to be entered before the (
It gives 9 as the correct answer.

 

[TheDan]

Another fun trick to lose trust in calculators is to solve √2 * √2