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

Chey's Percent Post

Percent means: an equivalent fraction out of 100. In French percent means "out of 100".

Here is how we find



0.6%

0.6% blow-up

180%

12 3/4 (0.75)%

12 3/4 (0.75)% blow up

2.)

       F          D          P

1.) 3/40 = 0.075 = 7.5%

       D          P          F

2.) 5.98 = 598% = 5  98/100

       P           D         F

3.) 0.3% = 0.003 = 3/1000




3.) D-P    To convert a decimal to a percent you multiply the number by 100
Ex: 0.024 x 100= 24%

P-D    To convert a percent to a decimal you divide the number by 100
Ex: 26%  ÷ 100 = 0.26

D-F    To convert a decimal to a fraction you take the decimal, say it, and write in fraction form.
Ex: 0.024 (say it = twenty four thousandths/ 24 out of 1000) 24/1000

F-D    To convert a fraction to a decimal you take the fraction, say it, and write in decimal form.
Ex: 7/10 (say it = seven out of ten/ seven tenths) 0.7

P-F     To convert a percent to a fraction you write the percent as a fraction with 100 as the denomenator,
and then put it lowest terms or if it is "top heavy" you make it a mixed fraction instead of an improper fraction
Ex: 24% = 24/100   24/100 = 6/25      Ex: 180% = 180/100    180/100 = 1 8/10

F-P    To convert a fraction to percent you divide the numerator by the denomenator, then you take the answer and multiply it by 100.

4.)       MENTAL MATH                                                        CALCULATOR 
                  %    |     #                                                                    60/5 = 12
                 100  |     60
         /5      20   |     12     /5


                %  |     #    
              100 |    40     
/1000      0.1 |    0.04     /1000                                                  40/1000 = 0.04


                        



         %    |     #                        %    |      #     
        100  | 400                       100  |   400
/2        50 | 200  /2       *2       200  |   800       *2                                 400/2 = 200

50% + 200% = 250%            200 + 800 = 1000                                  400 *2 = 800
                                250%=1000                                                        200 + 100 = 1000






5.) Discount is the money you save. Sale Price is what you pay after you subtract the discount off of the original price. Total Price With Taxes is the original price with a percentage called taxes added on. In percents it is more than 100%. Ex A pair of boots is 59.99 and the tax is 13%, you are paying 113% of the original price of the boots. To find the Total Price With Taxes you find the percentage being used for taxes and then you add that too the original price.

50% off is a better deal than 25% off an already reduced price. This is because adding the 25% off's together does not make 50% off because it is 25% off the original price and then 25% off the reduced price, which is new 100%. Ex. A shirt at Walmart is $10.00 and is on sale for 50% off. A shirt at Old Navy is $10.00 and is on sale for 25% off. The next day the shirts are still on sale except the shirt from Old Navy is now an additional 25% off. Which is the better buy?

10/2 = 5 $10.00-$5.00 = $5.00 Walmart Sale Price = $5.00
($5 is the Discount and when you subtract it from the original price ($10) you get the sale price, which is $5)
10/4 = 2.50 $10.00-$2.50 = $7.50       7.50/4 = 1.875 ($1.88) 7.50-1.88 = $5.62
Old Navy Sale Price = $5.62
($4.38 is the Discount and when you subtract from the original price ($10) you get the sale price, which is $5.62) Walmart is the better buy.