Axl's Percent Post

PERCENT MEANS-  is an equivalent fraction out of 100, per(out of) cent(100)

Here how we find the percent:
Example:

There are 40 apples, the 100% of apples in 40/40
10%
50%
25%
1%

10 % means- 10 out of 100- divide 100 percent to 10 which gives you 10 and divide the 40 apples to 10 which gives you the answer of 4. (4 out of 40 or 10 out of 100)


50% means- half, part/whole, 20 out of 40 or 50 out of 100 - dived the 100 percent to 2 which gives you 50 and you also need to divide 40 apples  to 2 which gives you 20. (20 out of 40 or 50 out of 100)

25% means- quarter out of 100- divide 100 percent to 4 gives you 25 and divide 40 apples to 4 gives you 10. (10 out of 40 or 25 out of 100)

1% means- 1 out of 100- divide 100 percent to 1 gives you the answer of 1 and divide 40 apples gives you the answer of 0.4. (0.4 out of 40 or 1 out of 100)

REPRESENTING PERCENTS:

A.180%                                          

B. 0.6%

C. 12 3/8

CONVERTING PERCENTS:

Fraction to Decimal and Percent:

171/300: 171/300= 0.57/1 x 100= 57/100= 57%

Decimal to Percent and Fraction:

5.98: 5.98/1 x 100= 598/100= 598%= 598/100

Percent to Decimal and Fraction:

750%: 750%/100= 7.5/1= 7 and 5/10= 7 and 1/2

PERCENT OF A NUMBER:

20% of 60
20/100=0.2
0.2 x 60=12
Calculation:
20  x 60=1200
1200/100=12

250% of 400
25/100=2.5
2.5 x 100=1000
Calculation:
250 x 400=1000000
1000000/100=1000


0.1% of 40
0.1/100=0.001
0.001 x 40=0.004
Calculation:
o.1 x 40=4
4/100=0.004

COMBINING PERCENTS:

Question 7 page 149:

A herd of caribou was moved to a new location. The population increased by 10% first year and then increased by 20% second year.

First year:
caribou= 10%
10% + 100= 110
110/10= 1.1
1.1 x 100=  110

Second year:
caribou= 20%
20% + 100= 120
120/100= 1.2
1.2 x 100= 132

explain why there are not 30 % increase in population over  the two years?

30% was not used because 100% had change. in the first year the total of caribou was 10%, but in the second year it increased 20%, so we need to make another solution. but the total wasn't 100 anymore it change to 110.


SHOW YOU KNOW

Store A: Price 100

100 + 25%= 125
25/100= 0.25
0.25 x 125= 31.25

Store B; Price 100

100 + 50%= 150
50/100= 0.5
0.5 x 150= 75

Store A is best to buy than Store B

Andrea's Percent post

Andrea's Percent Post

What is percent?

Percent means..

• Is an equivalent fraction out of a 100.

For example, 45% (read as "forty-five percent") is equal to 45/100, or 0.45. 

1.)If you have a question like:

What is 25% of 80?

you can solve that by using T- chart.

          

100/80

25 / 20
to solve this you will have to divide 100 by 4 to get 25%, you have to divide by 4 in the other side so it's equal, so you divide 80 by 4 which give you 20.

Representing percent

2.)

1.) 180 %

2.) 0.6%

3.) 12 3/8 %

Converting percent 

3.)
% --> D --> F

750% = 7.5 = 7 1/2
100 

12 3/4% = 12.75 or 0.1275 = 1275
100         1              10,000

Percent of a number

4.)

1. 20% of 60
Calculator:              Mental math:
60/100 = 0.6 x 20 = 12   #     % 
                         60 |100

                                                                     /10                                 /10

                                                                                          6    | 10
                                                                             / 6                                     /6
                                                           12   | 20 
2. 0.1% of 40
Calculator:                 Mental math:
40/100 = 0.4 x 0.1 = 0.004  #      %
                            40 |100
                        /100             /100
                            0.4 | 1 
                        /10 0.04 |0.1 /10
3. 250% of 400
Calculator:                Mental math:
400/100 = 4 x 250 = 1,000  #      %
                           400|100
                        x 2              x 2 
                                    800|200
                           /4              / 4
                          200 | 50
                         __________
                         1000 | 250

5.    

Combining percent

 PS4- $385   Discount- 15%

To find the sale price you have to subtract 15 by a 100.
100-15 = 85

So now the sale price is 85.
Then divide the discount by 100.
Which gives you 0.15.
Now you multiply by how much the PS4 cost,and it will give you an answer of 57,75.
(0.15 x 385 = 57.75)

Then you subtract 385 by 57.77, which gives you 327.23.
(385-57.77= 327.23)
You will pay $ 327.23.