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Wednesday, November 9, 2011

Chelsea's Textbook Question

Here is the question that we're going to solve from 2.1, Comparing and Ordering Rational Numbers:

26. Which number in each pair is greater? Explain each answer.

a) 0.4 and 0.44
b) 0. 333... and 0.33
c) -0.7 and -0.77
d) -0.66 and 0.66...

So, in order to figure out which number is greater, we have to put the decimal numbers onto a number line first. Then, you can convert it into a fraction (which you should still remember how to do so):

a)

0.4 = 4/10
0.44 = 44/100

0.44 is greater than 0.4

b)

0.333... = 1/3
0.33 = 33/100

0.333... is greater than 0.33

c)

-0.7 = -7/10
-0.77 = -77/100

-0.7 is the greater number than -0.77.

d)

-0.66 = -66/100
0.66... = 2/3

-0.66 is greater than 0.66...

If I have forgotten anything, please tell me!

5 comments:

  1. Great post Chelsea. Everything is well organized and easy to understand. I also like how you bolded key points in your post. Next time if you mention a number line, it wouldn't hurt to draw it out for us and explain.

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  2. Good job Chelsea! Your post is neat and understandable. Next time try using colours instead of just bolding them. I agree with Anabelle, next time make a picture of a number line. It's easier to understand the problem if it was done on a number line. Otherwise, well done!

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  3. Great post Chelsea. I like how you explaned your work. I also like how you made the key words bold and how everything was well organized. But next time, you should draw a picture of a number line to show what you ment by putting the decimals on a number line.

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  4. Good job Chelsea! I liked how you explained how you got your answers and how you made the key words bold. Like what everyone said, I think you should have made a number line to help show what you meant in your explanation. Good job again!!!

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  5. Great Job Chelsea! Your blog is very neat and organized. I like how you bolded important words in your blog. Next time I suggest to put more pictures. Keep up the good work!

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