Wednesday, January 13, 2010

Scribepost for January 13 , 2010 .

My scribepost will be answering questions 1 , 5 , 12 and 13 .

1. Use hundred grids and words to describe the similarities and differences between a percent less than 1%, a percent between 1% and 100%, and a percent greater than 100 %.

similarities are :

- it's still out of 100 .

- it can be shown on a hundred grid .

differences are :

- a percent less than 1 % is a decimal , it can't be a whole number .

5. What percent is represented by each diagram if a completely shaded grid represents 100%?

a ) 3/8 % out of 100

b) 125.5 % out of 100 .

c) 282 % out of 100 .

12. A 250-mL glass of milk contains 30% of the recommended daily value of calcium.Use a hundred grid to show how many glasses of milk you would need to drink to get 100% of the daily value of calcium .

So you would have to drink 833.3-> mL of milk to get 100 % calcium .

13. a) Use a calculator to convert 1/3 to a decimal. How could 1/3% be shown
using a hundred grid .

1/3 converted to a decimal is 0.3 repeated . x it by 100 gives you 33.3 repeated . So you would have to shade in 33 squares and a little part of another square .

b) Why are percents involving repeating decimals sometimes diffi cult to show on a hundred grid?

It's difficult to show it on the hundred grid because it's using a decimal place instead of a whole number . It's harder to estimate .
sorry it's short , please leave a comment :D


Ralph817 said...

Good Job Marielle! I liked how you used a picture to show your work. Maybe next time you should put more pictures to show what you were talking about in other questions such as question number 5. Also you spelt scribepost wrong. Nice Scribe though!

noeLLeCUV817 said...

Good job marielle, i like how you made your own picture to show your work. nice scribe.

Darlene8-17 said...

Good job Marielle ! Your scribe is understandable but you could have colored your fonts so that it stands out. Nice job on showing us a picture to show your work. x]


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