Tuesday, November 9, 2010

Kayla's Estimating Square Roots

Pg. 100, #14, 15

14. Alex is thinking of a number. The number has a square root between 7 and 8, and it is a multiple of 12.

a) What number is Alex thinking of?

The square root of 7 is 49, and the square root of 8 is 64. 60 fits in between 49 and 64 and is a multiple of 12.
  • 12 x 5 = 60
b) There are no other multiplications of 12 that would fit that has a square root of 7 or 8.


15. Order the following numbers from least to greatest.

  • 7, 6.7, 5.8, 5.1, 6.3 (I couldn't make the symbol for squaring, sorry. These are the simplified versions.)
The correct order is: 5.1, 5.8, 6.3, 6.7, 7

Here is a link for a video that shows you how to calculate square roots without a calculator! Enjoy.


  1. Nice post Kayla. I liked that you divided your work using lines so that people would know that they are different. I also like how you used colors very well, not too much color and not less color. Next time separate the video and a link. Other than that, great job.

  2. Good job, Kayla! I really liked your post! It was colourful and it was easy to read. I liked that you said that you couldn't find the square key. Good job.

  3. Great Blog, Kayla. I like the colors, it really stands out. Next time you should probably add a video and a link. I understand it very well, Great Job.

  4. Great post Kayla, I liked that you colorful and well organized post. I also liked the answers they really helped but maybe you should make a different link other than the video.

  5. Great job Kayla! You add the right amount of color, but next time you might want to add some pictures.

  6. Good job, Kayla. You explained your post neatly with color. Next time, add a video, link and a picture. Other than that, you did a great job.