Raymond's Percent Post

A percent is a equivalent fraction out of 100


100 percent means 100/100
To find 100 percent you divide by 1

50 percent means 1/2 or 50/100
To find 50 percent you divide by 2

25 percent means 1/4 or 25/100
To find 25 percent you divide by 4

10 percent means 10/100
To find 10 percent you divide by 10

1 percent means 1/100
To find 1 percent you divide by 100


Representing Percent
180%

0.6%


















12 3/8%

Converting percents, fractions, and decimals

750% 

7.50

7 1/2

Converting Decimals to Percents to Fractions

1)26%

26% ÷ 100 = 0.26

0.26/1 = 26/100

2) 7/10

7 ÷ 10 = 0.7

0.7 x 100 = 70%

3) 0.024

0.024 x 100 = 2.4%

0.024/1 = 24/1000

Percent

1) 20% of  60

2) 0.1% of 40

3)250% of 400

Sale Prices 

50% off is better than 25% off 

Question 7 pg. 149

100 is the number of caribou moved to a new location.Then another 10% came. It then became 110. Then it increased by 20% the next year, it became 132 because it was 20% of the new number of caribou

For the show you know I'll use 400 as my price

50% off for a day

50% of 400 is basically 200 because 50% is half so you divide by 2

so the total is $200

25% off followed by another 25% off the reduced price the next day

25% of 400 equals 100        400-100=300

so now the price is 300 the first day.

25% of 300 equals 75 so  300-75 equals 225

so the total is 225.

As you can see the 50% off for a day is better than 25% followed by another 25% the next day

Sophia's Percent Post

A percent is a equivalent number out of 100.

100 percent means everything, 100/100
To find 100 percent you have to divide the equivalent number by 1.

50 percent means 50/100, 1/2, divided by 2, half.
To find 50 percent you have to divide the equivalent number by 2.

25 percent means 25/100, 1/4, quarter, divided by 4.
To find 25 percent you have to divide the equivalent number by 4.

10 percent means 10/100, 1/10, divided by 10.
To find 10 percent you have to divide the equivalent number by 10.

1 percent means 1/100, divided by 100.
To find 1 percent you have to divide the equivalent number by 100.


3)



3) Converting Percents Fractions and Decimal

To convert a fraction to a decimal you have to divide the numerator and the denominator to get a decimal number.
ex. 3/40 = 0.075
3 divided by 40 makes 0.075

Now to convert a decimal to a percent you have to multiply my 100, because percents are out of 100 and also a decimal is out of 1.
ex. 0.075*100 = 7.5 so thats 7.5%
0.075 multiplied by 100 makes 7.5

To convert a percent to a fraction you have to get the decimal which if it was 7.5% you divide that by 100  which makes 0.075. Since the place holder is in the thousandths place we put the denominator 1000 and then 75 on the numerator. Then we divide by 2 to get a equivalent fraction.
ex.
75/1000 divide until we get an equivalent fraction = 3/40

4)
20% of 60
Calculator:

20/100= 0.2        0.2*60=12    therefore 12 is 20 percent of 60 

Mental Math:

20% of 60 0.1% of 40
250% of 400

5) Combining Percents

Which is a better deal? 
50% off or 25% off of an already reduced price of 25%
 If the price was $60.00
 to get 50 percent you divide 50 by 100 to get the decimal of 50. Then the number will be 0.5, so 0.5 * 60 = 30.00 so 50% of 60.00 is $30.00.

Now 25% of an already reduced price of 25%.
First get 25% of 60
Which will be 25/100 because all percents a out of 100. Then that would be 0.25, 0.25 * 60 = 15 then
 60- 15 = 45.00
Then there will be a new total  which is $45.00 Then repeat what you did before but instead of the 60 which was the old total it will be 45.00 so 45 -15  = 40.00

So now you know 50% is better then 25% off of an already reduced price of 25%.

Discount is what you save
Sale price is what you pay
Total price is what you pay with the taxes

Angie's Percent Post

A percent is an equivalent fraction out of 100.

100% means 100/100

To find 100% you divide by 1.

50% means 1/2 or 50/100

To find 50% you divide by 2.

25% means 1/4 or 25/100

To find 25% you divide by 4.

10% means 10/100

To find 10% you divide by 10.

1% means 1/100

To find 1% you divide by 100.

Representing Percents

180%

0.6%

12 3/4%

Converting Percents, Fractions and Decimals

3/40- First you divide the numerator by the denominator. Then you multiply the decimal by 100 to get your percent. 

3 divided by 40 = 0.075

0.075 x 100 = 7.5%

5.98- First you multiply by 100. To find the fraction, you count the amount of digits there are. In this case there are 3.

5.98 x 100 = 598%

The fraction would be 598/100.

750%- First you divide the percent by 100. You divide by 100 becausena percent is equivalent to 100 so you have to do the opposite operation.

750 divided by 100 = 7.5 

In this case, it would be 7 1/2. 

Show How You Know

20% of 60

20 divided by 100 = 0.20

0.20 x 60 = 12

20% of 60 is 12.

0.1% of 40

0.1 divided by 100 = 0.001

0.001 x 40 = 0.04

0.1% of 40 is 0.04.

250% of 400

250 divided by 100 = 2.5

2.5 x 400 = 1000

250% of 400 is 1000.

Question 3 on page 148

A. 15 ÷ 100= 0.15, 0.15 x 200 = 30, 30 + 200 = 230

B. 10 ÷ 100 = 0.1, 0.1 x 230 = 23, 23 + 230 = 253

C. 25 ÷ 100 = 0.25, 0.25 x 200 = 50, 50 + 200 = 250

Kyle is incorrect. 

A Discount is what you save.

A Total Price is what you pay altogether including tax.

A Sale Price is what you pay.

Show How You Know on page 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

0.25 x 68 = $17

$68 - $17 = $51

$51 x 0.25 = $12.75

$51 - $12.75 = $38.25

Store A is a better buy.

Video:
http://www.youtube.com/watch?v=LQUy83xFL5E

Jules' Percent Post

A percent is an equivalent fraction out of 100.

-100 percent means everything, 100/100, or 16/16.
To find 100 percent you have to divide the denominator by 1.

-50 percent means half, 1/2, or 50/100.
To find 50 percent you have to divide the number by 2.

-10 percent means 10/100, 1/10, or to divide by 10.
To find 10 percent you have to divide the number by 10.

-1 percent means 1/100.
To find 1 percent you have to divide the number by 100.

-25 percent means 25/100 or 1/4.
To find 25 percent you have to divide the number by 4.

Representing Percents
180%

0.6%

12.3/4%

Converting Percents, Fractions, and Decimals.

-Converting a fraction into a decimal then percent.
3/40
3 divided by 40 = 0.075 x 100 = 7.5%

-Converting a decimal into a percent then a fraction.
0.0064
0.0064 = 0.64   64%  64/10 000
1          100

-Converting percents to a decimal then a fraction.
750%
750 = 7.5      7 5/10
100      1

20% of 60

0.1% of 40

250% of 400

Show you know
Original price- $10.00
store a) 50% off
$10.00 divide by 2 = $5.00
Price- $5.00

store b) 25% off one day followed by 25% off reduced price the second day.
$10.00 divide by 4 = 2$2.50 $10.00 - $2.50 = $7.50
$7.50 divide by 4 = $ 1.857
$7.50 - $1. 857 = $5.643
Price- $ 5.643

I think store a is a better deal because it is much cheaper rather than paying more than 50 cents more.

Discount - what you save.

Sale Price - what you pay.

Total Price - what you are paying with tax.

http://www.youtube.com/watch?v=SOOK094MmDs#action=share

Dani's Percent Post

A percent is an equivalent number out of 100.

100 percent means everything or 100/100.
To find 100 percent you have to divide the numerator and denominator by 1.

50 percent means half, 50/100, or 1/2.
To find 50 percent you have to divide the numerator and denominator by 2.

25 percent means 25/100 or 1/4.
To find 25 percent you have to divide the numerator and denominator by 4

10 percent means 10/100 or divide by 10.
To find 10 percent you have to divide the numerator and denominator by 10.

1 percent means 1/100.
To find 1 percent you have to divide the numerator and denominator by 100.

Representing Percent

180%

0.6%













12 3/4%

Converting percent, fraction and decimal

Fraction->decimals->percent
 3/40
3 ÷ 40 = 0.075 x 100 = 7.5%

Decimal->percent->fraction-
0.0064
0.0064 x 100 = 0.64%

Percent->decimal->fraction
750%
750 ÷ 100 = 7.5% ÷ 100 = 0.075

Percent -> Decimal -> Fraction
26%
26 ÷ 100 = 0.26

Fraction-> Decimal-> Percent
7/10
7÷10 = 0.7 x 100 = 70%

Decimal->Percent->Fraction
0.024
0.024 x 100 = 2.4% find place value and set up 2.4/1000

20% of 60
Calculator
20 ÷ 100 = 0.2 x 60 = 12

0.1% of 40
Calculator
0.1 ÷ 100 = 0.001 x 40 = 0.04

250% of 400
Calculator
250 ÷ 100 = 2.5 x 400 = 1000

0.10 x 100= 10 

100 + 10= 110

0.20 x 110= 22

110 + 22= 132

URL:http://www.youtube.com/watch?v=uBDdBk1AWAw&safe=active

Nicklaus' Percent Post

A percent is an equivalent fraction out of a hundred. You can convert percent to a fraction, decimal and degrees. You can add, subtract, multiply or divide fractions. Percent also means per hundred. Percents are part of a circle graph. If you divide the numerator by the denominator and multiply it by a hundred, your answer will be a percent.

100% means everything.
To find 100%, you need to divide the denominator by 1. For example 10/10 or 18/18

50% means half
To find 50%, you need to divide the denominator by 2. For example 2/4 or 6/12

10% means 1/10 of the whole number
To find  10%, you need to divide the denominator by 10. For example 4/40 or 30/300

25% means a quarter
To find 25%, you need to divide the denominator by 4. For example 1/4 or 25/100

1% means 1/100 of the whole number
To find the 1%, you need to divide the denominator by 100. For example 4/400 or 0.2/20


180%

0.6%

12 3/4 %

26% turn into decimal and fraction. 26÷100 = 0.26-26/100 divide 2/2= 13/50
                                                                      1 00

7/10 turn into a decimal and a percent. 7÷10=0.7 - 0.7*100=70 70%

0.024 turn into into a fraction and a percent. 0.024*100=2.4 2.4%- 24/1000  by 8/8 = 3/125
1 000
(i multiply the fractions by 100 because each percent is out of 100 and each decimal is out of 1. So if you  cross multiply or cross product, you will get the same answer. It can work backwards if you are trying to to turn a percent to a decimal)

7)  A herd of 100 caribou was moved to a new location.The population increase by 10% in the first year and 10% the second year.
 
A find the population in the second year.



SHOW YOU KNOW.

http://www.mathplayground.com/howto_perfracdec.html

Joshua's Percent Post

percent is an equivalent fraction out of a hundred.

100 percent is everything.

to find 100 percent you need to divide by 1

 50 percent is half of everything

to find 50 percent you need to divide by 2

10 percent is a tenth out of a hundred

to find 10 percent you need to divide 10

25 percent is a quarter out of a hundred

to find 25 percent you need to divide by 4

1 percent is one out of a hundred

to find 1 percent you need to divide by 100

Representing Percent:

180%

0.6%

12 3/4%





Converting Percent, Fractions and  Decimals.

1) Converting fractions to decimals to percent.

 3 

40  =  3÷40 = 0.075 x 100 = 7.5%

2)Converting decimal to percent to fractions.

0.0064 x 100 = 64%  ÷  16/16 = 4/625

3) Converting percent to decimal to fraction.
 750% ÷ 100 = 7.5 = 7 1/2
                          1

Convert to decimal to percent to fraction.
1) 26%
26% ÷ 100 = 0.26
0.26 = 26/100

2) 7/10
7 ÷ 10 = 0.7
0.7 x 100 = 70%

3)0.024
0.024 x 100 = 2.4
2.4/100

Percent
1) 20% of 60

2) 0.1% of 40

3)250% of 400

Combining Percents

50% is better

There's a 100 caribou, then in 1 year it increase 10%  

and it will have 110 caribou, after 2 years it increase 20%

which will make 132 caribou.
There will be 132 caribou in 2 years.

for the "show you know" my price will be 800

Store A:

50% off one day only

50% is the same as half, you divide it into 2 and the answer will be 400

Store B:

25% off one day followed by 25% off the reduced price the second day

first day:

0.25 x 800 = 200
800 - 200 = 600

the first day, it will be 600

second day:

0.25 x 600 = 150

600 - 150 = 450

the second day, it will be 450.

50% is better then 25%

Ian's Percent Post

A percent is an equivalent fraction out of 100/100

100% means everything or 100/100
To find 100% you need to divide the denominator by 1.

50% means half or 50/100
To find 50% you need to divide the denominator by 2.

25% means 25/100
To find 25% you need to divide the denominator by 4.

10% means 10/100
To find 10% you need to divide the denominator by 10.

1% means 1/100
To find 1% you need to divide the denominator by 100.


Representing Percents
   
     180%

    0.6%

12 3/4%

Converting Percents, Fractions and Decimals.

Converting Fractions to Percents and a Decimal.

3/40

To change 3/40 into a decimal, you need to divide the numerator by the denominator.

3 divided by 40 = 0.075

To make it into a percent, you take the 0.075 and multiply it by 100.

0.075 x 100 = 7.5/100 or 7.5%

Converting Decimals to a Percent and a Fraction.

0.268

To change 0.268 into a percent, you take the 0.268 and multiply it by 100.

0.268 x 100 = 26.8/100 or 26.8%

To make it into a fraction, you need to lay it out like this. 

0.268 The 1 is the place holder.

1 000 After this you need to make it into short term form so:

 268  =  134 =  67

1000     500    250

Converting Percents to a Decimal and a Fraction.

750%

To change 750% into a decimal, you need to divide it by 100.

750% divided by 100 = 7.5

To make it into a fraction, you simply take 7.5 and make it into a fraction.

7.5 = 7 1/2

Combining Percents 

For example if  it's $75
50% OFF of $75 is $37.50
If it's 25% then 25% off the second day of $75
$75 x 25 = 1875/100 = $18.75
$75-18.75=56.25
56.25 x 25 = 1406.25/100= $14.0625 or $14.07
56.25 - 14.07 = $42.18

Seemeen's Percent Post

A percent is a numerator that is out of one hundred. ?/100

100 percent means everything 100/100 or 10/10
To find 100% you divide the denominator by 1.
example: If you have 40 apples and you want to find out 100% of those 40 apples you think. If I think of 100 as a fraction it looks like this: 100/100. But if you divide the denominator by 1 you get 100%now if you divide denominator of 40/40 by 1 you still have 40. That means that 100% of 40 is 100%.

50 percent means half or 1/2 or 50/100.
To find 50% you divide the denominator by 2.
example: If you have 40 apples and you want to find out 50% of those apples, you think. If I think of 50 as a fraction, it looks like this: 50/100. But if you divide the denominator by 2 you get 50% which is half, now if you divide the denominator of 40/40 by 2, you get 20. That means that 50% of 40 is 20%.

10 percent means 10/100 or 1/10.
To find 10% you divide the denominator by 10.
example: If you have 40 apples and you want to find out 10% of those apples, you think. If I think of 10 as a fraction it will look like this: 10/100. But if you divide the denominator by 10 you get 10%, now you divide the denominator of 40/40 by 10 ,you get 4. That means that 10% of 40 is 4%.

25 percent means 25/100 or 1/4.
To find 25% you divide the denominator by 4.
example: If you have 40 apples and you want to find out 25% of those apples, you think, If I think of 25 as a fraction it looks like this: 25/100. But if you divide the denominator by 4 you get 25%, now if you divide the denominator of 40/40 by 4, you get 10. That means that 25% of 40 is 10%.

1 percent means 1/100.
To find 1% you divide the denominator by 100.
example: If  you have 40 apples and you want to find out 1% of those apples, you think. If I think of 1 as a fraction it looks like this: 1/100. But if you divide the denominator by 100 you get 1%, now if you divide the denominator of 40/40 by 100, you get 0.04. That means that 1% of 40 is 0.04%.


Representing percent
180%                                                                        

                   





















0.6%

12 3/4%

Converting Percents, Fractions and Decimals

1) Convert the fraction into a percent:

               3/40

answer 1) 3÷40= 0.075 X 100= 7.5  or 7.5%

                               1                 100

2) Convert the decimal to a percent and a fraction.

                           0.0064

answer 2) 0.0064 X 100= 0.64%= 64/100000÷32/32= 2/3125

Convert the percent to a decimal and to a fraction.

                             750%

Answer 3) 750÷100= 7.5 = 7 1/2                                           

                                    1

Convert these to a fraction, percent and decimal.

26%

26 ÷ 100= 0.26- decimal 

0.26= 26/100 ÷ 2/2= 13/50- reduced fraction

7/10

7 ÷ 10 = 0.7- decimal

0.7 x 100= 70%- fraction 

0.024 

0.024= 24/1000 ÷ 2/2= 12/500 ÷ 2/2= 6/250 ÷ 2/2= 3/125- reduced fraction

0.024 x 100= 2.4%- percent 

Solve these questions using mental math and calculator method.

20% of 60 

 

    20% ÷ 100= 0.2

0.2 x 60= 12- answer

0.1% of 40 

0.1 ÷ 100= 0.001

0.001 x 40= 0.04- answer

250% of 400 

The answer in the picture is wrong, I accidentally added an extra 0 at the end. It should say 1000.

250 ÷ 100= 2.5

2.5 x 400= 1000- answer

Explain what a sale price, discount and a total price with taxes.

A sales price is the total amount you are paying.

A discount is what you save.

A total price with taxes is when you have the sales price and you add on an extra 13% for the government.

7) 0.10 x 100= 10 

     100+ 10= 110

    0.20x 110= 22

      110+ 22= 132

There was not a 30% increase because after the first 10% increase there was a new amount of caribou. So there was a new 100%.

URL of a video to help find a percent:

 http://www.youtube.com/watch?v=LQUy83xFL5E&safe=active