scribe post for november 26

4:58 PM

(13) Comments

Scribe Post for November 26, 08 by Louisse



Yesterday we did ten questions with solutions.
I'm going to show you the answers and solutions for the first four questions

-Here is the fisrt question.














here is the solution.........


-first you need to add the first 2 numbers
-3+(-5)-11=
-copy the answer of the first two numbers then bring down the rest of integer numbers.
-8-11=-19
so you can understand it a little bit better you can look at the picture.















-so that is one way to do the question..


-here is the second question, but this question is a little bit harder to explain.

so I'm just going to show you picures.


(Question#2)














solution..














-here is the third question..























THE SOLUTION IS....

first you need to multiply the first two numbers(6(-2)=-12)then you need to multiply the second two numbers.

second you need to multiply or add(it depends on the question) the numbers under it.
if you got the answers you need to divide it.








-here is the fourth question

















THE SOLUTION IS....
first, you need to add -5 and 19, then multiply 6 to -1, if you got the answer add it. after that, divide it to -4.
plsssss leave a comment!!!
for the next scribe I choose Bea

muriel 9-04

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Scribe Post for November 24, 08 by Xtian

5:03 PM

(16) Comments



Today's class we discussed about Multiplicative Inverse.




Multiplicative inverese is another way to solve a problem when dividing integers.




Do you know how to use this? well I do. Look at this problem




6/(-2)=?




try to answer this at your calculator ......did your calculator said its error


No!!! Your Calculator said that the answer is -3 the question is why is that?




here is my inderstanding about this lesson.




try to answer this using quotative inverse (how many -2 are in 6)


WE CAN'T USE THAT ONE BECAUSE WE CAN'T MAKE NEGATIVES




now try to answer this using partative.(how many equal parts are in -2 when we have 6.)


WE CAN'T ANSWER THAT ALSO BECAUSE WE CAN'T MAKE GROUPS OF


NEGATIVE.




HERE IS A GOOD PICTURE OF TO UNDERSTAND MULTIPLICATIVE INVERSE.

plsssssssssss leave a comment and help me to understand it a little better

for the next scribe I choose Muriel

xtian 9-05

Scribe Post for Nov.20, 2008 by Lance

5:08 PM

(11) Comments

Today in class we have discussed the Division of Integers. We talked about quadrants.

We also learned that there are 3 ways to write division statement.



To make division easier to understand there are two ways we can use the Quotative and Partitive.

Example:
12 ÷4= 3


Quotative




How many fours are there in twelve.
We have to circle three groups of four.

Partitive
How many equal parts are in four groups if we have 12.
We have to circle four groups of three.
12÷4=3
to check your answer
3×4=12
For the next Scribe I choose Christian.

lance8-73

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Scribe Post for November 19,2008 by Chie Visda

8:10 PM

(7) Comments

Today in class, we went over our work, the work we did the today . Heres what we did in class Division of Integers

Here's the new stuff

(Quotative)


(Partitive)


Then after, Mr. H gave us homework in Division of Integers.

-6/2 we have to put this in the right quadrant.

And for the next Scribe I chose Lance.
 Please leave a comment!

Chie8-73

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Scribe Post for Nov. 18 by Anylance

6:11 PM

(6) Comments

Today we had an Integer Quiz. Here's what we did, I'll do 3 questions:
Question # 6).
-(-3+9)+(-4-3)
First you have to do the inside the parentheses.
-(-3+9)+(-4-3)
-(+6) +(-7)
Now you can see that there is a negative sign before a parentheses, -(+6), this means that you have to change the sign of the number inside, you have to think that the number is multiplied by
-1.
-(+6)+(-7)
↓
- 6+-7
- 13
question # 7).
25- {(-5-5)-(16-4)}
The first thing that you have to do is to do the inside, the parentheses. After getting the difference you can remove the parentheses and we only have a bracket. A negative sign is written before the brackets which means we have to subtract the number inside it from 25 and doing this means we have to change the sign of the number inside the bracket then proceed to addition of integers.
Steps:
1). 25-{(-10)-(12)}
2). 25-{-22}
3). 25+22
4).+47
question # 8:
8-{-6-(-5)}
First do the operation inside the grouping symbol. Before (-5) there is a minus sign, that minus you have to change the sign of -5, so this will become +5.
8-{-6+5}
Now we can have the sum of -6+5 and that is (-1).
8-{-1}
Before {-1} there is a minus sign, so we have to change the sign of -1 and we can now remove the bracket. This will give us 8+1 and this is equal to 9.


























































































































































anylance8-73

Scribe Post for Nov.14 - Elmane Amado

6:06 PM

(9) Comments

Today in class, we went over our homework, the homework we did the day before. Heres what we did in class question 19-31, but i'll just do two questions:



19. (-1)(-8)(3)(-1)=
V V
(8) (-3) = -24


20. 2(-3)(-4)=
V
2 (12) = 24 :
make sure you bring down the "2"

Heres the New Stuff :
The Two questions:

(2)(-3)+(2)(-3)=
and
(2)(-3)-3(-3)=
Answer:
(2)(-3)+(2)(-3)=
VV
(-6)+(-6)= -12
(2)(-3)-3(2)(-3)=
VV
(4)(9) = 36

Then after, Mr. H gave us homework in page 6 questions 1-8.
And for the next Scribe I chose Any.

And please leave a comment. Thank for reading !

elmane8-73

4:25 PM

(11) Comments

Scribe Post for November 13, 2008

Today in class checked our homework (green booklet pg. 5, 13-18) to make sure our answers are right. We spent most of the class on this. Since you already know the rules/theorem for multiplying integers, I will talk about the "new" thing we learned in class.

We learned what to do with questions like this:

Since there is no sign between the -2 and the bracket, that means you have to multiply. To solve this question, put the -2 in brackets:




Then solve the question like you would normally. Remember, there is an even number of negative integers in this question so the product will be positive.



The answer to this question is +6.



We also learned how to solve questions where the negative sign is outside the bracket. Like this:


That negative sign, all by itself means -1. So the question will now look like this:


(-1)(2)= -2 . Now we answer the rest of the question:
You can also do it this way:

When you see a negative sign beside a bracket (uh-oh) you change the integer to a positive.


Well that's all for today. Remember, homework is the green booklet pg. 5, questions 19 - 36. I hope my pictures weren't too bad ;). I choose Elmane as the next scribe. Please leave comments. Thanks for reading!

explorer9-05

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