# Thread: how do you calculate?

1. Originally Posted by INTP
for example this: ((5-3+(6x5)) + (8+2-5)) x 2

i say this in my head: five two sixty thirty two, then keep 32 in mind by remembering 3 and the number before that. then eight ten five = five. thirtyseven sixty seventy two two = 4 = 74

how do you calculate this or can you explain it?
More or less the same.

2 30 (32) + 10 (5) --37, 60- 74

2. Originally Posted by tinkerbell
I'd use BODMAS.....

Boackets Off
Divide
Multiply
Subtract

Enjoy
Ah yes, the good old BODMAS. I had learnt it also as BIDMAS 'I' being 'Indices'.

3. My kids were talking about pemdas and I'm like... Nooo it's order of difficulty/order you are taught how to do the math. If I try to remember stuff with acronyms I spend the whole test trying to remember the acronym and if I happen to remember that I spend the whole time trying to remember what the letters stand for. That's if I actually disciplined myself to learn the acronym to start with.

"order of difficulty/order you are taught how to do the math"

Parentheses go first, obviously (you probably even learn it last since it's part of the "what order" lesson)
Exponents go second because they are the last thing you learned in math of the group (and are "hardest")
Division and multiplication are next, also next in line of learning/hardness scale
Addition and subtraction you learned first so you are going to do them last.

It's like peeling an onion, the order you learn them in is covering up the center answer so you have to peel each layer to get to the answer. You can't do addition first because multiplication and division cover that layer up.

I apparently have issues.

Does anyone else think like this??

4. Originally Posted by Elaur
Does anyone else think like this??
No. But it's okay.

5. Originally Posted by INTP
for example this: ((5-3+(6x5)) + (8+2-5)) x 2

i say this in my head: five two sixty thirty two, then keep 32 in mind by remembering 3 and the number before that. then eight ten five = five. thirtyseven sixty seventy two two = 4 = 74

how do you calculate this or can you explain it?
no fives, -3 and 2 make -1 and thirty makes 29, and 40 and 18 is 58, whoops forgot 8, 58 and 16 makes 74.

The overuse of parentheses annoyed me.

I like Habba's line by line so here was mine
((5-3+(6x5)) + (8+2-5)) x 2
-3 + (6x5) + 2
-1 + (6X5)
-1 + 30
29
29 X 2
58
Done
58 + 2(8)
74
Now really done.

6. Originally Posted by INTP
((5-3+(6x5)) + (8+2-5)) x 2
((5-3+(30)) + (8+2-5)) x 2
((2+(30)) + (8+2-5)) x 2
((32) + (8+2-5)) x 2
((32) + (5)) x 2
37 x 2
30 x 2 + 7 x 2
60 + 14
74

Here it is, line by line.

7. Originally Posted by Habba
((5-3+(30)) + (8+2-5)) x 2
((2+(30)) + (8+2-5)) x 2
((32) + (8+2-5)) x 2
((32) + (5)) x 2
37 x 2
30 x 2 + 7 x 2
60 + 14
74

Here it is, line by line.
Perfect down to the last rule.

8. Originally Posted by whatever
look at math problem... vaguely attempt solving math problem until I realize that it's boring because I don't even know WHY I'm solving it (I beleive in story problems and story problems only)... conclude "fuck it!" and check out someone else's answer
this is pretty close to my method except I stop trying to solve it outright in the exact moment after I see the math problem.

Like OP's question, why would I solve that at home? mental masturbation? That's like normal masturbation with an iron claw (personally).

9. ((5-3+(6x5)) + (8+2-5)) x 2
((2+30)+5)*2
37*2
74
delicious.

10. 37 * 2 by sight then I think for a sec

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
Single Sign On provided by vBSSO