Today in class we learned about Square brackets. Basically, square brackets are just a way of showing that you have to figure out the answer inside the brackets before doing anything else. For example:

[(8+1) + (5+6)] + 7 = ?

Step 1. Add the numbers inside the regular brackets, and bring down the addition sign.

[8+1) + (5+6) + 7

[9 + 11] + 7

Step 2. Add the two remaining numbers (Only one integer will survive, as Harbeck likes to say) then figure out the rest of the problem.

[(8+1) + (5+6)] + 7

[ 9 + 11] + 7

20 + 7 = 27

The answer is 27.

Below are some more examples..enjoy. (As if!)

12 - [(-2-4) - (10 + 7)]

12 - [ -11 - 28 ]

12 - - 39 = 51

* Note: It may help if you make the two minus signs into one positive. (- - = +)

[(4+7) + (2+2)] + 6

[ 11 + 4 ] + 6

15 + 6 = 21

Well, there is my Scribe Post. Now comes the fun part, picking the next scribe. Unfortunately, I'm pretty sure I'm the last person before we start a new rotation, so everyone is now free to be picked xD Therefore, the next scribe is... Nicole SR (Sorry, I think. :P)

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J.J. 8-41said...Awesome work Jordan! I really helped me understand the how Square bracket thing work. It is simple but that is what makes it easy to understand.

And again Awesome Work.

November 4, 2008 at 8:01 PM

Jocelynskogbergsaid...Hi. I really like your explanation and its very clear to follow! I really like how you show that two negatives are a positive because this is a place that I know causes a lot of confusion!

November 7, 2008 at 10:59 AM

Sara (U of R)said...Good work!

I really enjoyed your explaination of square brackets. I know how confusing they can be at first.

Nicely done - your post was great and very easy to follow with lots of awesome examples (that were colorful too, which is really great)!

November 9, 2008 at 7:59 PM