841 Math Blog

Today in class, we had a QUIZ!
So, in this scribe I will be talking about the first four questions from the quiz.

Just so you know, if I put something in RED that means that I'm answering it, or that it is the question. If something is in GREEN then that would be the answer to the question.

Number 1 :


I don't know what you did, but instead of subtracting the 11, I added a negative 11.
The question then looked like this :

To solve this question, I split this question into two parts.
The first thing I did was add the negative 3 with the negative 5 which equaled negative 8.
-3 + (-5) = -8

Next I added the negative 8 with the negative 11 which then equaled negative 19.
-8 + (-11) = -19


Number 2 :

Number 2 is not as easy as number 1, but if you had trouble doing this, I will explain how I figured it out.



The first thing I did, was answer whichever pairs I can. So I decided to multiply the 5 and negative 4, and the negative 2 and negative 1.
(5)(-4) + (-2)(-1)(-6) = ?
(-20) + (2) (-6) = ?

To solve the first one, I just remembered the saying that we do when we multiply (look at your barn doors project). '5 groups of negative 4'. You should then know that the answer is negative 20. For the second part that I did, I said the other saying for negative integers at the front. 'Remove 2 groups of negative 1'. And if you did your multiplication homework, you then should know that the answer is negative 2. Anyways, time to finish the equation.

(-20) + (2)(-6) = ?

Two groups of negative six equals ?..
(-20) + (-12) = ? / Negative 12!

Now finish off the question by adding the remaining integers.
(-20) + (-12) = (-32)


Number 3 :



Number 3 is way harder than the previous questions since it includes dividing. Before we divide we must come up with one integer on the top and one integer on the bottom. Once again, I just divided the question in parts to make it easier.

6(-2) (-3)(1)
───────── = ?
To solve this, just use the "rule for multiplying" when you try to figure out a multiplication question. If you did it correctly, your answers should look something like this :

(-12) (-3)
─────── = ?
(-9)

Now answer the top part of the fraction/division sign.
'Remove 12 groups of negative 3'. What does that give you?

(-36)
──── = ?
(-9)

What would that question be; quotative, partitive, or multiplicative inverse?
If you guessed quotative, then you're right!
'How many negative nines are in negative 36'?
(-36)
──── = 4
(-9)


Number 4 :


This question I will have to make fairly quick because it's getting late.

(14) + (-6)
──────── = ?
(-4)

Next add the two integers on the top.

(8)
── = ?
(-4)

What would that question be; quotative, partitive, or multiplicative inverse?
If you guessed multiplicative inverse then you're right!
'N x (-4) = (8)'. What is N?

(8)
── = (-2)
(-4)

These are two questions i got wrong on my test.

This is question 6...

3(-4)-5(-3)+(-3)(-2)= -3

I did this first and got...
3(-4)= -12

Second I did this question...
-5(-3)=15

Last I did this question i added them all together.
+(-3)(-2)=-6

3(-4)-5(-3)+(-3)(-2)

-12+15+-6=-3

This is question 10..
-3(4)(-2)-(-2)(7)+(5)(-5)(-1)=63

I broke them up into 3 multiplying questions
-3(4)(-2)=24

-(-2)(7)=14

+(5)(-5)(-1)=+25


24+14+25=63

Today in class we did DIVIDING INTEGERS. We learned about QUOTATIVE DIVISION and PARTITIVE DIVISION the question we used as an example was 6 divided by 2

Some other ways you can write six divied by 2 is: 6 divided by (+2), N divided by 2 = 6.

ooo ooo imagine this was to groups of three. (my images wouldn't upload so i had to improvise)

Quotative Division is how many twos are in six.



Partitive Division is how many parts are in two groups when we have six.





The next scribe is.......alex.h

Hey 8-41 its Nichole, Today we were learning about Multiplying integers..

We first folden two papers into four quadrants.
then we numberd them
1in the top right corner
2 in the top left corner
3 in the bottom left corner
4 in the bottom right corner.
in the ''BARN DOOR''a Mr. Harbeck would say..we put these exact words and numbers
(+2)(+3)= Whe brackets touch they are multiplying.
2 groups of 3

this is how Harbeck and Sutchia put it:
Mr .H: ''When brackets are touching they are kissing, and they are like bunny rabbits .. they multiply''
Sutchia: '' Rabbits Multiply? .. OH....!!''

And for homework we had to ''finish it'' .. and i didnt get how to finish it till i asked someone else..
and i think that we were suppost make an example of it..
(+9)(+1)=+9
9 groups of 1

sorry i dont have any pictures and its not that pretty but i tried and my computer is realy slow so this is what u get.. so t next scribe .. hmm .. who would that be then NICOLE MARQUES!! ( ha! revenge is sweet!!).

Well I have been away for a while so here I am stuck in the room 17 until I finish my work and this happens to be one of the things I have to do. So I shall be doing this post on the subtraction of integers because....

-7-(-50)-(5)+8=
Re-write ! Get rid of the training pants.
+7+5-5+8= 1
ZERO PAIRS ! take them out.




8+(+7)+3+(+5)=
Re-write ! Take the Backets out.
8+7+3+5= 23

Oh my gosh, this took me soo long I don't even kno what to do on this scribe thing. Harbeck i tried my best sorry if it sucks. Please let me go to the dance . ): aha .

HELLO CLASSMATES FROM 8-41! (: Today we started learning integers in STANDARD FORM. Mr. Harbeck gave us a new green booklet with many math questions but we didn't do them in all on one day. First of all, he told us to do the first 3 questions in part one. This is how we did it......and WE ARE SUPPOSE TO COMBINE THE INTEGERS!

This is how you combine the integers and how you solve it!




This are two questions with brackets solved differently in standard form:
In this question you will have to rewrite this question by not having the "owes" in it.

This question involves getting rid of the zero pairs! This is how you can solve this question very easily.I hope you understood and enjoyed my scribe today! If I didn't explain something that clear to you, please tell me right away by leaving me a comment! (:

Heyy... It's me Nicole M... :] I know to many Nicole's but guess what?... GET OVER IT :] tehe! Well I'm here for the scribe post :] umm... Today we did alittle of subtraction and addition together!! OOOOOO... yup. heres an example of what we did...

mwauhahahah :] Enjoy!!! Oh... and the next scribe is... drum roll.... NICHOLE SEARLE!!!!! MWUAHAHA Sorry Nichole <3 color="#ff0000">>:D

Uh.. Is this too late? Whatever. Harbek's not here. He's skipping.


Today, or, yesterday, Mr. Harbek started teaching us about subtraction. Then he said, there's no such thing as subtraction. Half the time, i don't even know what he's talking about, but as today's scribe, yesterday's scribe, it's not my job to understand, i just have to copy. You have to understand. Sucka. OMG. :P


Harbek: Class, were starting subtraction. 41 your my favourite class, 17 are a group of nerds. Now, THERE IS NO SUCH THING AS SUBTRACTION, IT"S ALL JUST BACKWORDS ADDITION. Or somewhere along those lines. I can't spell backwards...


Like so:

(-42)-(-53) <----NO!! We have to change that.

(-42)+(-53) There's a plus there now.

Cool 41 student: It doesn't make sense anymore, Mr. Harbek.


Harbek: Your very right student! We have to change that.

Like so:

(-42)+(+53)

Harbek: There are a few rules for this, Fontaine, are you paying attention? Because this is your homework for this evening.

So theres four, or more, steps that Mr. Harbek mentioned. I took note to what those steps were, but lost note, to where those notes are. So, these may not be the exact steps, but hopefully your all better learners than I am and noted them more gooder. Whoa! I just figured out how to use spellcheck.

Integer Tile Rules/Steps

example equation: (-5)-(-5) Nice and easy for room 17.


Step 1:

-Get rid of the last two number signs on the number equations. Like this:

(-5)+(+5)

Step 2:

-Use integer tiles to represent the positive and negative. (I don't know how to import pictures, so get used to the tiles I'm using.)

O=Positive

O=Negative

(-5)+(+5)

OOOOO, and OOOOO

Step 3:

-Now you have the correct number of tiles. now do like the sign in the middle, (+) and add them up. Like this:

OOOOO OOOOO

OOOOO <----

Step 4:

-Now that they are zero pairs, you can finally do the work. Not all equations are going to have zero pairs in them, so you'll have to make sure your doing this the right way, (the way Harbek made us write it, not the one I made up...)


Since i have this computer work deficiency where I don't know how to do anything, this post sucked. Hopefully, this next scribe knows what he's doing. (Is this right? Do i just, randomly pick somebody... You'll figure it out.) The next scribe is... Alex. S Sorry, kinda.

Today, we worked on adding Integers. This will be our last assignment before we learn how to subtract and multiply them. They are on page 44 on the yellow booklet.

Today in class we did more about intergers. We learned it the grade 9 way. It is like Algebra but Integers.

This is on Page 45 nubers 1 to 5.

1. (-36)+(-14)+(-16)= -94

2. (-86)+(-14)+(16)= -84

(-100)+(16)= -84

3. (-3)+(-4)+(-15)= -22


4. (24)+(18)+(30)= +72


5. (-21)+(-32)+(21)= -30

(-53)+(21)= -30

This is what we did in math today... if i did something wrong please tell me.. and you have to live a lot of coments behind or else..... you all are wondering how the next SCRIBE is ............. Ummmmm... The next scribe is...................... HOLLAND !!!!! :P

Hello everybody! Today's math class we did some more on integers. Our math homework was pages 43 (D) even numbered questions, and (E) fill in the chart, and 44 (F). I've been asked to do questions 6-10 on page 44 (F). So here they are:


Oh, and by the way, I'll give you all the situations before I answer them. I will also bold the important key words and/or numbers in the situation.


6. A certain stock starts at 319 points, gains 55 points, drops 45 points, and drops 28 points.
7. An elevator starts on the 9th floor, descends 5 floors, and ascends 9 floors.


8. A helium filled balloon is released, gains 53m, drops 32m, gains 47m, and drops 38m.


9. An airplane takes off, gains 955m, gains another 273m, drops 36m, and drops 49m.


10. The temperature starts at 18(degrees)C, drops 4(degrees)C, rises 22(degrees)C, drops 6(degrees)C, and gains 8(degrees)C.


*The keywords and/or numbers tell you wether it is a negative, positive, or a zero.
Remember that you should always re-group if it is not re-grouped already

Number 9:

Number 10:

Remember, we have a quiz on Friday, so study away!

I hope you all enjoyed my scribe post.

Yeah, I know, you want to know who the next scriber is.

But I'm not going to say it yet...

Okay, I'll say it now. The next scriber is...Krissia! :)

Integers ..
Today, we had our second day of learning Integers. We didn't really talk about anything. Except for the yellow workbook we have. We have to do pages 41 and 42, there are about 100 questions.
There is three sections to it A. 1-10, B.1-24, and C.1-75. For A. 1-10 you need to answer it with number lines. B. 1-10 you need to answer them with "have and owe", and 16-24 it is your choice, you can answer it however you want. For C. 1-10 you have to answer it with pictures (pictorial), and 11-75 is your choice be free to answer it however you want.

Here are three examples from each section. (A,B,C)

A.
1. 7 to the right, 3 to the left.



B.
1. (+4)+(+3)= +7
have 4 and have 3 = +7


C.
1. (+10)+(+3)= +13



There is my three examples for each sections. This is all we learned for today. (Oct.20,08) Don't forget to leave me a comment.
So for the next scribe im choosing SUTCHAI WONDA SANA ! :) Have fun SUTCHAI! Look who's gonna have to suffer :P.

Today in class we continued talking about integers...





















1. Using a number line 7 to the right and 3 to the left

2.Using the "have and owe" method

(+4)+(+3)=(+7) or Have 4 and Have 3 = Have 7

3. Using Integer chips

The next scribe is ....................... Nicole N

HELLO 8-41 ! :) Today we started a new unit on ...

INTEGERS!


Is this an integer question? 6-5 = 1
YES!
Did you know this is the very same question? (+6) + (-5) = 1




Doing the scribe post was actually kind of fun. Sorry there's only alittle bit of stuff on here. NOW heres what you girls have been waiting for, the next scribe I choose to be is ................................ TRACY !!!!! bwuahahaa :D . Good luck :) . Oh yeah, PLEASE COMMENT!

Hello Everybody from room 8-41. Here is what we did in math class today.