Showing posts with label converting percents. Show all posts
Showing posts with label converting percents. Show all posts

Saturday, January 15, 2011

Lizelle's Percent Scribe.

For this scribe, I chose question #3, #8, and #12.

For #3 I got:
a) 6000
b) 6.15
c) 0.04

For #8 I got:
$21.42

For #12 I got
1110 kilometres on a full tank.

Cylinder & Volume Post.


Height = 10cm
Diameter = 20.3cm


r= d/2
r = 20.3 / 2
r = 10.5cm

v = π x r x r x h

v = 3.14 x 10.15 x 10.15

v = 323.49cm2
v = 323.49 x 10

v = 3234.9cm3



Height = 10m
Diameter = 0.8 (inside) and 1 (outside)


Inside -
R = d/2
R = 0.8/2
R = 0.4

V = π x r x r x h
V = 3.14 x 0.4 x 0.4 x h
V = 0.5 x 10
V = 5m

Outside -
R = d/2
R = 1/2
R = 0.5

V = π x r x r x h
V = 3.14 x 0.5 x 0.5 x h
V = 0.78 x 10
V = 7.8m

Tuesday, December 21, 2010

Ryan's Scribe Post

8. The original price of a jacket was $84.00. A store manager marked the price down by 25 1/2 %. By how much was the price reduced?
Math Info
*
Original Price = $84. 00
* Price down by 25 1/2%
* 25 1/2% = 25. 5%
Math Info
* 25. 5% = $21. 42
The price was reduced by $21. 42.
10. When water freezes, its volume increases by approximately 10%.
a) By how much does the volume of 750mL of water increase when it freezes?
Math Info
* 10% increase
Math Info
* 10% = 75mL
The volume increases by 75mL when it has an original volume of 750mL.
b) What is the volume of ice created?
Math Info
* 750mL = 100%
* 10% = 75mL
750mL + 75mL = 825mL
The volume is 825mL.
16. Josephine scored 12 baskets out of 30 shots in her first basketball game this year. Her scoring average was then 40%. The next game, she made ten shots and raised her scoring average for both games to 50%. How many of the ten shots in the second game were baskets?
Math Info
First Game
* Scored 12 baskets
* Took 30 shots
Second Game
* Took 10 shots
* __ shots out of 10 = baskets
* Average = 40%
All Games
* Scoring Averge = 50%
* Took 40 shots [30 + 10]
* 50% of 40 shots = 20 shots

Math Info
* 8 shots out of 10 = baskets
8/10 shots were baskets.

Jocelyn's scribe post

Jocelyn's scribe post

This is questions #4 use mental math to solve problems
a) 20% of 60 - answer) 12 is 20% of 60
b) 250% of 400- answer)1000 is 250% of 400
c) 10.5% of 100- Answer)10.5 is 10.5% of a hundred

This is question #7 200 tickets were sold
a) what is the percent of winning with one ticket- answer) 1% of 200
b)how many tickets would you have to buy to get a 2.5% chance of winning- answer) 2.5 tickets to get a 2.5% chance out of 200

This is question #16
Josephine haad an average of 40% after her first game, the second game she had ten shots and finished with an average of 50%. How many baskes did she make out of ten- Answer) 8 baskets went in out of the ten

Cathlene's Scribe Post

5. Determine the percent of each number.
Give your answer to the nearest
hundredth.
a) 2 % of 32
__
5



















b) 15 1 % of 950
__
4



















c) 175% of $125.5





















7. Two hundred tickets are being sold for a
school draw.


a) What is your chance of winning with
one ticket? Express your answer as
a percent.






























b) How many tickets would you need
to purchase to have a 2.5% chance
of winning


























8. The original price of a jacket was $84.00.
A store manager marked the price down
by 25 1 %. By how much was the price reduced
__
2


The price was reduced by $21.42

Nicholas Inot ' Scribe Post

3. Use mental math to determine each of the following.



4. Use mental math to find the following.





8. The original price of a jacket was $84.00. A store manager marked the price down by 25 1/2%. By how much was the price reduced?