Subtracting Integer Scribe Post

Subtracting Integers
Integers are negative and positive numbers. You can use terms as "have" and "owe" instead of saying positive and negative, think of it money wise. When adding integers you would say "and" instead of saying plus and when subtracting integers you would say "remove" instead of subtract. I'm going to be explaining 2 different questions for subtracting integers.

The first question is (-5) - (-4) =
 As a sentence: owe 5 remove owe 4 =

To answer this question there's a little rhyme for it "To subtract what isn't there, you must add a zero pair" so that's what you need to do. To make a zero pair you need to add 4 positives to -4 because -4 and +4 equal 0, that's how you make zero pairs (add the opposite integer). Once you made your zero pair, you get rid of your negative numbers. So in this case you'll get rid of the -4 and you'll have +4 left over. (You always convert your second number the zero pair). Once you have your number, you're going to subtract the first number (-5) to the number you now have after making your zero pair (+4).
For this question, the answer will be -1.

The second question is: 1 - (-2) =
As a sentence: have 1 remove owe 2 =

Once again you need to make zero pairs to the second number.So you add +2 to -2 and that makes zero, which is a zero pair. Now you remove -2 because you have +2 now. Once you're done that, you remove your new answer which is +2 from 1 (when there's no symbol in front of the number it's a positive).
For this answer your answer will be 3 or +3.

YouTube Video
1:39 - 3:31 (zero pairs)



Integer game link:
http://www.xpmath.com/forums/arcade.php?do=play&gameid=49

Amanda's Pay It Forward

Part 1
What is Pay It Forward?
- Pay It Forward is something you do to help others or make them feel good without getting anything in return. A random act of kindness. When doing Pay It Forward you're doing it to make a difference in the world, to make an impact. It doesn't matter if you start off small or start off big. The purpose is to make someone or something feel good. During Pay It Forward you're not only making someone else feel good, you're making yourself feel good. By getting nothing in return but a smile, it makes you feel real good inside and i think that's what the purpose really is. To not only make someone else feel good but to make yourself feel good as well. If you make yourself feel good by doing one random act of kindness it gives you that motivational drive to keep doing more. Eventually, when everyone else realizes this, then maybe we can really change the world. 

Part 2
What was your Pay It Forward act of kindness?
- My Pay It Forward act of kindness was walking around my neighborhood going door to door with Ainsley putting letters and candy canes in people's mailboxes, it was one of the coldest days during our break, but with Ainsley I had so much fun. I also gave out letters and candy canes to the grade 7 girls after basketball practice. The letters were short and sweet with holiday greetings on them. I also got chocolates for Mr.Mark, our basketball coach. 
Why did you choose this activity?
-  I chose this activity not only because it was simple and easy but because I know it's always nice to get greeted on the holidays. I thought it would be nice and thoughtful to give the cards out too.
Who did you help?
- What Ainsley and I did didn't really help people, it was suppose to make those people feel happy. To make them feel joy and to know that there are some really thoughtful and kind people out there. You could say we helped those who were feeling down or not in the mood at the moment, or those that needed some holiday spirit! I guess we did it to put a smile on their face. 
What did you do?
- I wrote cards and bought candy canes and put them in mailboxes and handed them out to a couple of grade 7 girls.

When did you do your act of kindness? 

- We did our act of kindness on December 30th (one of the coldest days we could've picked) and January 3rd. 

Part 3
How did your act of kindness go?/ What happened?
- I think our act of kindness went pretty good, it was a whole lot of fun and I'm hoping that the people that received them enjoyed them too. It was easy but thoughtful, so overall I thought it went great. Except for the fact we were freezing, my eye lashes got frozen and so did Ainsley's hair. It was about -30 to -35, wasn't the best day to do it but we sucked it up and went out there. We gave out the cards and candy canes, we were out there for about half an hour, it's not that long but we sure got a lot done.
How did you feel?
- Doing our Pay It Forward made me feel really good, it made me feel happy and as you can see in our videos we had a great time doing it. Even though we had to do it for our project it really made me feel like I was doing it for me, like it was my decision. That's what really felt good, giving back.
How did that person or people react?
- I'm not totally sure how the people we gave the cards too reacted because we only put them in the mailboxes. I really hoped the liked them and enjoyed our little notes. When I was giving them out to the grade 7's they were so confused. They kept asking what was it for, I didn't tell them it was for our project, I said it was to make them feel happy and to smile. They were really excited and loud when I gave it to them, also when I told them to take a candy cane they all tried to put their hand into the bag all at once! They were really happy and I thought that was great!
Did you ask the person or people to "Pay It Forward"?
- In the cards I did write Pay It Forward, I think that's an important part that we should've included while doing this. Just to tell them or let them know that they should do something nice to others.
How did they react to your request?
- I'm not sure how the people I gave it too reacted because we did only put the cards in mailboxes and all the grade 7 girls wanted to read theirs at home since they needed to leave right away.

Part 4
Why is the idea of "Pay It Forward" important?
- I think that the idea of Pay It Forward is important because it makes yourself and others feel good. Some people don't know this but they're doing it all the time. For example when others open the door for other people that's a random act of kindness, small acts of kindness or big, it doesn't matter. Without random acts of kindness people wouldn't be as social or out there as others, by doing acts of kindness we're showing people that they don't have to be afraid of the world. The point is to make others happy and doing it without getting anything in return.
Has your act of kindness made a difference?
- I don't know if my act of kindness made a difference yet. Hopefully it does soon, well even if it happens tomorrow or 2 years from now it would still be worth it to know you did something nice for that person. Even if it doesn't make a difference there's always a second chance to try again, actually when doing Pay It Forward we get unlimited chances to try and try again. There's no limit to kindness, some people don't realize that yet. Hopefully I can make an Impact on the world or to the community at least, that  people will remember. 

I hope you enjoyed my Pay It Forward!!

Amanda's Percent Post

A percent is an equivalent fraction out of 100. A fraction is a percent or can be converted to a percent. To get the percent from a fraction you need to divide the numerator by the denominator, this will give you a decimal. You then multiply the decimal by 100. That number is going to be your percent.

Ex. 4/5 

4/5 = 0.8

0.8 x 100 = 80%

80 = 80%

100% means everything! 100/100 or 37/37

For 100%, say your fraction was 100/100. To find 100% you divide 100 by 1. Since you're only dividing 100 by 1 it's still going to be 100. It's still going to be the same. This works with all fractions that have the same numerator and denominator. 

Ex:100% of 60=?

60/1=60

60=60

50% means half, 1/2 or 50/100. 

To find 50% you must divide your number by 2. That gives you half of your number which is 50%

Ex:50% of 60=?

60/2=30

30=30

25% means 1/4, 25/100 or divided by 4. 

To find 25% you must divide your number by 4. The number you get is 1/4 of the number you started with. 

Ex:25% of 60=?

60/4=15

15-15

10% means 1/10, 10/100 or divided by 10. 

To find 10% you must divide your number by 10. This gives you a number that is 1/10. This number is 10% of the number you started with. 

Ex:10% of 60=?

60/10=6

6=6

1% means 1/100 or divided by 100. 

To find 1% you must divide your number by 100. This give you a number that's 1/100 or 1%. 

Ex:1% of 60=?

60/100=0.6

0.6=0.6

a) 180%

b) 0.6% 

c) 12 3/4%

Converting Fractions to Decimals and Percents: 88/50
Numerator divide by the Denominator
88 divide by 50 = 1.76
1.76 x 100 = 176%

Converting Decimals to Percents and Fractions: 0.0064
0.0064 x 100 = 0.64 or 0.64%
64/10000 divide by 16/16 = 4/625

Converting Percents to Decimals and Fractions: 750%
750 divide 100 = 7.5
750/100 = 7.5 or 7 1/2


Show How You Know:  

20% of 60: 20÷100= 0.2
0.2 x 60=12
20% of 6 = 12

0.1% of 40:0.1÷100=0.001
0.001 x 40=0.04
0.1% of 40 is 0.4

250% of 400:250÷100=2.52.5 x 400=1000
250% of 400 is 1000

Question #3 on pg 148:

a) 15 ÷ 100 = 0.15       b) 10 ÷ 100 = 0.1          c) 25 ÷ 100 = 0.25
    0.15 x 200 = 30            0.1 x 230 = 23              0.25 x 200 = 50
    30 + 200 = 230             23 + 230 = 253            50 + 200 = 250

Kyle is incorrect.

Discount - what you save
Sale Price - what you pay
Total Price - what you pay altogether with tax.
( Discount - Original Price = Sale Price)     (Sale Price + Tax = Total Price)


Show How You Know pg 148
Which is a better buy? What is the final price?
          Plate Collection $ 68.00
Store A: 50% off one day only
              68 ÷ 2 = $34

Store B: 25% off one day followed by 25% off the reduced price the second day.
             25 ÷ 100 = 0.25               $51 x 0.25 = $12.75
             0.25 x 68 = $17               $51 - $ 12.75 = $38.25
             $68 - $17 = $51

Store A has a better deal because it is less than Store B after the discount.