Alex's Percent Scribe

(Click image to make it bigger)

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Kim's Percent Scribe

** ALWAYS REMEMBER, WHATEVER YOU DO TO ONE SIDE OF THE TABLE,
YOU ALSO DO TO THE OTHER**

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Christine's Scribepost for Feb. 3

I couldnt do the second question in a ratio table . I forgot how to do it and when my friend wrote it for me.. I lost the paper . & I couldnt find the percent video . sorry (:

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Jarret8-73 Percents,3 Questions

Jarret's percent scribepost(;

Today in class Mr.harbeck told us to post 3 questions we did for percents.

1.4.99 + 4.99 + 3.99 + 19.99= $33.96 x 1.12= $38.0352

2.19.99 x 3 =59.97 x 1.11=
$66.5667

A)7/10 %

B)3/5%

C)101/4 %

D.245%

PLEASE COMMENT(; And if i am wrong pleaase do correct me(; please and thanks.

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Caitlin T's Scribepost for February 3, 2010

Sorry they are pictures but it's easier for me to do. And sorry if I answered or made a mistake during the ratio tables.


OOH! one more thing if you see I was mistakened I put the percent first instead of the other number. [I was in a rush after school ]

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Amiel's Scribe for feb 3,2010

Key ideas

percents can be combined by adding to solve a problem 5%+7%=12% .to calculate the increase of a # .you can add the combined percent amount to the original # .percents of percents can be used to determine amounts that result from consecutive percent increase or decrease .you can multiply the original # by a single percent greater than 100 [eg. 112% of 100= 1.12x 10 = 112

THE FINAL SALE

3. 1st I found 10% then add it to 100 . Then I found 15% then added all of my answers together which gave me 100.25

Now just find 25% of 100 then add it to 100.25.

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Camille's scribepost for Feb. 2

Foldable

KEY WORDS


• Percents can be combined by adding to solve problems. 5% + 7% = 12%

• To calculate the increase in a number,

You can add the combined percent
amount to the original number.
12% of 100 = 0.12 × 100 = 12
100 + 12 = 112


You can multiply the original number
by a single percent greater than 100.
112% of 100 = 1.12 × 100
= 112


• Percents of percents can be used to determine amounts that result from
consecutive percent increases or decreases.

Show you know

What is the final sale price at each store? Which is a better buy?
Explain your thinking.
Store A: 50% off one day only
Store B: 25% off one day followed by 25% off the reduced price the
second day

200 is the price and to get 50 % you divide 200 by 2 which is 100 so the sale price is 100 dollars.

The price is 200 and to find 25% you divide 200 by 4 and the other side by 4 . Which is 50. 50=25 %. so 200-50 =150 and the percent is 75 percent. you subtract 50 from 200 because 50 is 25% and the discount is 25%.

So then the next day its on sale again but 25% off yesterdays price . So 150 is the new 100% then to find 25% 150 divided by 4 = 37.50 and remember whatever you do on one side you do to the other side. So 25% is 37.50 so then you take 150 -37.50 and it equals 112.50

Store A is the better buy because the sale price is 100 and the sale price at store b is 112.50.

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Michael's Percent Scribepost for Feb. 1 2010

1st question:

1st way:35x1.11=38.85 I multiplied it by 1.11 because 35 divided by 1 is 100% and 0.11 would be 11%.

2nd way:


After you find the pst amount and the gst amount you just add the taxes to the price answer= 38.85


=================================

2nd question:


1st way:
35/5=7 (20%) so it is a 7$ discount 35-7=28 (new 100%)
28x1.11= 31.08

2nd way:

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Jerick73 Scribepost for Percent Foldable

Yesterday, we had are homework was to copy down the key ideas in our foldable and show the recipes to find 10%, 5%, 1%, 25%, 150, 0.5%.

Key Ideas
You can use mental math strategies such as halving, doubling, and dividing by ten to find the percents of some numbers.

To calculate the percent of a number, write the percent as a decimal and then multiply by the number.

12.5 % of 50 =0.125 x 50 =6.25

Communicate the Ideas
1. Explain to a classmate how you could use mental math to find each of the following.
a)300% of 40 b)0.5 of 120 c)10.5% of 80

a)300% of 400 , 100% is 40 so you simply multiply 100% by 3 and you get 300%

b)0.5% of 120, Divide 120 by 100 to get 1% and divide by 2 to get half of 1 % which is 0.5%

c)10.5 of 80, Divide 80 by 10 to get the 10 percent , now you have your 10 , to get the .5 divide the 10% by 10 to get 1 % and half that one to get your .5% then add the numbers 10+.5

2. Describe two ways to find 6% of 120

- Divide by 10 to get 10% then divide by two to get 5% , after divide your 10% by 10 to get 1% and add 1%+5% to get your 6% number.

-Divide by 100 to get 1% and multiply that by 6 to get 6%

How To Find...
10% - Divide the Number by 10
5% - Divide by 10 then divide by 2
1% - Divide by 100
25% - Divide by 4
150% - Divide by 2 and add your 100% number with your 50% number
0.5% - Divide by 100 then Divide by 2

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Eric.P's Percent Scribepost for January 26, 2010

Okay today's homework was to answer the questions 3- 6 to from page 142 in the math text book. Also you can't use a calculator everything has to be done in your head. If you use a calculator Harbeck will kick you in the leg.

So here's how I got question 3 and 4 using my head.

3.

A) To find 300% of 2000 you need to times 2000 by 3 because a percent is always out of 100 and 300% is 3 times larger than 100.

2000 x 3 = 6000

100% x 3 = 300%

6000 = 300%

B) To find 1 and one quarter of a percent of 60 you need to first find 1%. Now that you have 1 percent you can find 1 quarter of a percent by dividing it by 4. Now add both the 1 percent and the one quarter of the percent together to get your answer.

60 / 100 = 0.6

0.6 / 4 = 0.15

0.15 + 0.6 = 0.75

0.75 = 1 and one quarter of a percent.

Tip: For those who had trouble with figuring out 0.6 divided by 4 you can times it by 100 then divide by 4 then divide by 100 to get your answer.

c) To find 0.1% of 40 you need to divide 40 by 1000.

40 / 1000 = 0.04

Tip: Dividing by a number like this that has 1 then a bunch of zeros you can just move the decimal place left by how many zeros there are.

4.

A) To find 20% of 60 you need to divide 60 by 5. I will explain why you do this since 20% is 5 times smaller than 100% you will need to divide 60 by 5.

60 / 5 = 12

Tip: Another way to do this is to divide by 10 then times 2. You can do this because 100% divided by 10 is 10% then times 2 is 20%.

B) To find 250% of 400 you need to first times 400 by 2 to get 200%. Still using your 400 divide it by 2to get 50% add the 2 and you will get your answer.

400 x 2 = 800

400 / 2 = 200

800 + 200 = 1000

c) To find 10 and a half of a percent of 100 you need to first find 10% of 100. To find 10% just divide by 10. Now you need to find half a percent first with the 10% you have divide that by 10 again to get 1% now with that divide the 1% in half to get the half of a percent. Now add the 10% and the half of a percent together to get your answer.

100/ 10 = 10
10 / 10 = 1
1 / 2 = 0.5
10 + 0.5 = 10.5

If I messed up or something comment and tell me.

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Percent Scribe for January 26, 2010

5. a) 2/5% of 325 = 1.3
2/5% = 0.4%
First find 1% of 325. Do that by dividing 325 to 100 and you will get 3.25, then divide it again by 10 to get 0.1% (0.325) multiply 0.325 by 4. The answer is 1.3

b) 15 1/4% of 950 = 144.88
Find 10% of 950, 950÷ 10 = 95 (10%), divided it into half so 95 ÷ 2 = 47.5 (5%), 95 + 47.5 = 142.5.
950 ÷ 100 = 9.5 (1%) ÷ 4 = 2.375 (1/4%)
142.5 + 2.375 = 144.88

c) 175% of $125.50 = 219.63
100% is 125.50 ÷ 2 to get 50%.
125.50 ÷ 2 = 62.75 (50%) divide it into 2to get 25%
62.75 ÷ 2 = 31.375(25%)
125.50 + 62.75 + 31.375 = 219.63

6. a) 5/8 of 520 = 3.25
5/8 = (0.625)
520 ÷ 100 = 5.2 (1%) ÷ 2 = 2.6 (0.5%) ÷ 2 = 1.3 (0.25%) ÷ 2 = 0.65(0.125)
2.6 + 0.65 = 3.25

b) 75 2/5% of 200 = 150.8
divide 200 by 4 to get 25%! 200 ÷ 4 = 50(multiply 50 by 3) 50 x 3 = 150 (75%)
divide 200 by 100 to get 1%! 200 ÷ 100 = 2(1%) (divide by 10) 2 ÷10 = 0.2 (0.1) multiply by 4 to get 2/5%. 0.2 x 4 = 0.8
150 + 0.8 = 150.8

c) 250% of $76.50 = 191.25
Multiply 76.5 by 2. 76.5 x 2 = 153(200%)
divide 76.5 by 2. 76.5 ÷2 = 38.25

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Vicky's Finding Percent Post

HEEEYYOO.

Today in class we were practicing how to find percent out of different numbers. Our homework was to find a variety of percents out of 400.

I did this all without a calculator. I did this all in my head. So thats why I dont have any of the work to show. Because some of the answers were kind of hard to write out and explain how I've done it.

I don't know if my answers are all that accurate, but I've double checked them on my calculator to see if they were correct. If you guys find any errors you can just comment .


Sorry if it's blurry and bright on one side and dark on the other. I had to use my webcam because my camera didn't work.

Hope you guys liked my post :) COMMENT PLEEEEASE .

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Problems & Percents

Problems & Percents

We will use example 4: Determine a Percent

This example uses PROPORTIONS in this problem.

To solve this problem we will do part a.

a)What percent is the current speed of the original speed?

For this we will use proportions to help us.

We need to find the CURRENT speed over the ORIGINAL speed.

Now we need to find the original speed and current speed.

The current speed is at 50 km/year.

The original speed was at 10 km/year.

Now you can see here the current speed is 50 km over 10 km (Current Speed over Original Speed)

Now we need to find what percent of the current speed is over the original speed.

10 km is 100%

How do you get from 10 km to 50 km?

10 x 5 = 50 km

So we do the same thing we do to the percent.

100% x 5 = 500%

Here is the answer to a.

The current speed is 500% over the

original speed.

Now we will do b.

In this question we're finding how much the pole drifts in 1 year around the earths circumference in percent form.

We know that the pole drifts 50 km / year.

The Earths circumference is 40 000 km.

We will also be using proportion for this.

We need to find the poles km over the earths circumference.

So it will be 50 km over 40 000 km.

Now we will need to simplify this into lowest terms.

The answer we get is 1 / 800

Now we can find the percent by dividing 1 by 800.

1/800 = 0.00125

To get the percent we need to multiply the decimal by 100.

0.00125 x 100 = 0.125%.

So the answer is that at 50km / year the pole drifts 0.125% or 1/8% of the Earths circumference in 1 year.

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Percents 2

As of January 17th, 10 we continue with our new unit "PERCENTS,FRACTIONS, AND DECIMALS". So for todays class we had to work on our foldable under (fractions, decimals, and percents). If you hadn't finished it yet .. that's what my scribe is here for to help you :) .

KEY IDEAS :

• Fractions, Decimals, and Percents can be used to represent numbers in various situations.
• Percents can be written as a fraction and as decimals.

1/2% = 0.5 150% = 150/100 42 3/4% = 42.75%

o.5% = 0.5/100 = 1.5 or 1 1/2 42.75 % = 42.75/100

= 0.005 = 0.4275

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Krystal`s Scribe for January. 14, 2010

Decimal to Percent=You just have to move the decimal 2 places to the right.Another way to do it is to multiply it by 100. For example. 1.25X100 =125. Just add the percent sign. I find it way easier by doing it with multiplying by 100.

Fraction to Percent= The way I learned was a little different.Since fractions is the same as division, I just divide the fraction number and get the percentage. For example . 61 over 100= 61 divided by 100 = 0.61,just add the percent sign.

Decimal to Fraction= When a decimal has 2 numbers after the decimal it`s out of 100, if it only has 1 number after the decimal, its out of 10, if it has 3 numbers after the decimal it`s out of 1000.ect.For example. 0.005= 5 over 1000. But if its a decimal like this "3.2", 3 is the whole and 2 is out of 10 since it`s the only number after the decimal.the fraction would be , 3 as the whole and 2 over 10.Don`t forget to simplify so it would be , 3 as a whole and 1 over 5. To simplify it , just divide it by 2.

Fraction to Decimal= Remember, a fraction is division turned up-right. That means if the fraction was, 7 over 10, side-to-side would be, 7 divided by 10 =0.7 . Easy,right ? But what if your fraction has a whole number ? for example : 1 and 1 over 4, since the 1 over 4 is simplified, think of it as not simplified "25 over 100" = 25 divided by 100 = 0.25. Take the ".25" and do nothing to the whole number,Then you have "1.25". Sorry, I tried explaining it as best as I could. It`s really easy if you understand what I`m talking about.

BY THE WAY ! Sorry it`s late...

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Hannah's scribepost for January 13.

Sorry it's late.

question 4.

question8.

How many hundred grids are needed to show each of the following percents?

a.) 300% = 3 hundreds grids

b.) 466% = 5 hundreds grids

c.) 1200% = 12 hundreds grids

question9.

Give two examples where a percent greater than 100% might be found in everyday life.

- Nutritional facts.

- Receipts (taxes)

question 16.

Suppose one large square represents 100%. The square is divided into smaller equal-sized pieces.

a.) If there are 1000 pieces, what percent do 17 pieces represent?

b.) If there are two large squares each divided into ten smaller pieces, what percent do 13 pieces represent ?

c.) If the large square is divided into eight smaller pieces, show how to represent 87 1/2 and 56 1/4.

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Gail's Percent blog for January 13, 2010

The order of the pictures from top to bottom are #1, #5, #12,and #13 from pages 128-129. Click the picture to make them larger... (:

Thanks and dont forget to comment [:

PEACE OUT [:

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RAQUEL'S SCRIBE FOR PERCENT.

DURING MATH CLASS

So, during math class we corrected the fractions we did for homework. Such as..

We also had to use a 10x10 grid for solving percent problems. such as this:

After that, we did a foldable. To do that we had to get 3 pieces of loose leaf and make each one of them evenly spaced out. When you do that you have to fold it backwards and then you will make your foldable which looks like this. :

(There's to much flaps but it's okay. (: Just imagine there's only 6.)
When your done that, you write what each flap represent. After that, you have to write on the first flap. We had to find the definition of percent and fractional percent. Under that we had to draw out what the percentages ( I think I forgot my foldable at school so, I don't remember the numbers. ) look like on a grid. The definitions are:

Percent- is a way of expressing a number as a fraction of 100.
Fractional Percent- a percent that includes a portion of a percent.

YES, IT'S LATE WELL.. NOT REALLY BUT, I STILL DID IT. SORRY !! (: ANYWAYS, TELL ME IF I MADE A MISTAKE OR I MISSED SOMETHING, I'LL FIX IT RIGHT AWAY. PC OUT. REMEMBER TO COMMENT.
- Raquel Lorenzo January 12, 2009. (:

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