Sargent Park 8-17 Math

Tuesday, January 24, 2006

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1.
1)write a simple sentence answer
2)underline the information you were given and think about what it's telling you to do
3)make a word ratio
4)do the cross multiply method to find your answer
5)check back to see if your answers are correct

2.
#3 The original price of the sofa was $500. It is now on sale for $440. What was the percent of decrease?
Answer: The percent of the decrease is ___%
P = DISCOUNT = $60 = ___%
W = REGULAR $ = $500 = 100%

600 x 20 = 12,000 / 100 = 12
So:
The percent of the decrease is 12%

3.
#9B If you enlarged the original diagram to twice its size, what would be the area of the door?

My mistake: THE AREA WOULD BE ___ SQUARE CENTIMETRES.
P = NEW AREA = ____= 200%
W = OLD AREA = 8 = 100%
8 x 200 = 1600 / 100 = 16

Correct answer: The are would be 32 square centimetres.
width x length = new area
or
4 x 8 = 32

P.S. If something is wrong in this post please leave a comment and tell me how to do it properly and if there is any other solutions if you could please share it with me. Thank You




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1 Comments:

  • there is nothing wrong with this post. It is very well done. You should try the puzzle that is at the grade 8 blog. You will find it a challenge.

    H

    By Blogger Mr. H, at 9:00 PM  

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