## Monday, October 24, 2011

### Ryan's Math Post

Minuend-Subtrahend=Difference
Factor+Factor=Product
Dividend/Divisor=Quotient

10x1000=10 000 0.1x1000=100
10x100=1 000 0.1x100=10
10x10=100 0.1x10=1
10x1=10 0.1x1=0.1
10x0.1=1 0.1x0.1=0.01
10x0.01=0.1 0.1x0.01=0.001
10x0.001=0.01 0.1x0.001=0.0001
10x0.0001=0.001 0.1x0.0001=0.00001

A good way to multiply hard decimals is:
121 1.21
x13 x1.3
----- ------
363 1.573
1210
-------
1573

A rule for multiplying decimals could be: Add how many decimal places are in each factor to get the decimal place value in the product.

Examples:
1 + 1 = 2
0.2x0.2=0.04
3 + 3 = 6
0.111x0.1111=0.012321
4 + 4 = 8
0.1111x0.1111=0000.01234321

100/10=10 0.001/0.1=0.01
10/10=1 0.01/0.1=0.1
1/10=0.1 0.1/0.1=1
0.1/10=0.01 1/0.1=10
0.01/10=0.001 10/0.1=100
0.001/10=0.0001 100/0.1=1 000

A rule for dividing decimals could be: Subtract how many decimal places are in the dividend and divisor to get the decimal place value in the quotient.

Examples:
2 - 1 = 1
0.02/0.4=0.5
2 - 3 = -1
0.02/0.006=3.33..

Homework!

-Finish all 2.2 worksheets
-Homework Book
-Math Textbook;leftover work

1. My computer won't let me put colour.

2. Great post Ryan.You really had a lot of information and your post was also well explained. Other than not having colour, you should put the questions right under the next because it looks confusing that way. Also add a link or video and who's doing the next blog.

3. Nice post Ryan! I like how you showed your work and that you explained it. Next time you could try to space it out a little bit more and add a link and video to help us more with decimals. Also include who is doing the next blog! Other then that, nice job.

4. Good job Ryan, next time you should explain what you're doing step by step so it's easier ro understand. Also add a video, link and more color next time. Good job including the homework. Keep it up!

5. Nice post! I like how you included lots of information on your blog. Next time, try to explain what you're trying to do more clearly. Also, include pictures, colour and link or video to make your blog more helpful to those looking at your blog. Other than that keep it up!

6. Great job Ryan. Your post had both information and an explanation, but I would suggest that you make the letters a little bigger and space it out, but other than that good job.

7. Good job Ryan! I liked how your blog was neat and easy to understand. Also, you had a lot of information on your post, which is really good. You explained things well too. Next time, try adding color, pictures, a link, or a video.

8. Great job Ryan. I liked how you had a lot of information on your post. Next time align your equal signs to make it a bit neater and try adding some pictures to make it better. Also adding a video or a link can enhance your post.