Wednesday, December 9, 2009
Tuesday, December 8, 2009
The difference between 13 and 7 is 6.
13 - 7 = 6
Half of this difference is 3.
6 divided by 2 equals 3.
The number 10 is halfway between 7 and 13.
7 + 3 = 10 Or...
13 - 3 = 10
Finding a halfway between numbers.
70 and 170
70 + 170 = 240
And divide it by two. It equals 120.
68 and 72: The answer would be 69, 70, 71.
108.3 and 111.6: The answer would be 109 and 110
B is in between A and C.
Thursday, November 26, 2009
Area of square and rectangle>>> Length x Width = Area
Parallelogram- a four figure with opposite sides, parallel and equal
Example:Height(h)- the perpendicular distance from the base to the opposite side.
Base(b)- side of a two dimensional closed figure.(SHAPE)
AREA OF PARALLELOGRAM
A=B X H
(b) is 5 cm and (h) is 3cm. Plug there values into a formula...
A = B X H
A= 5 x 3
Monday, November 23, 2009
- An Angle That Is Less Than 90 dg.
1. Fold Paper
Wednesday, November 18, 2009
Ways to Make a Perpendicular Bisector:
- Use a right triangle.
1. Make an arc from point A that is greater than half way.
Here is a video for all of you to enjoy and hopefully it will help you understand bisecting more.
** Today's Homework**
Remember that there is going to be a test tomorrow on perpendicular, parallel and bisecting line segments. So everyone please study hard.(:
Tuesday, November 17, 2009
How to Draw Perpendicular Lines
- fold paper like so:
2. use protractor like so:
Pages 86-88 #1-16 is HOMEWORK!!!
Here is a quick link to save you the trouble of typing.
If you still have trouble with perpendicular lines, here's a video.
Monday, November 16, 2009
Geometry- shapes and measurements.
Parallel- describes two lines in the same plane that never cross, or intersect.
- they are marked using arrows.
Perpendicular- describes lines that intersect at right angles. ( 90°)
- they are marked using a small square. ________________________________________________________________
measure the diference from:
A to B
B to C
E to F
F to G
I to J
J to K
they all are 8.9 cm.
identify any parallel lines you can find.
AE // BF, EI // FJ, CG // BF, GK // JF, AI // CK
what d0 you notice about parallel lines? they always are the same distance apart no metter where you measure, as long as you measure a perpedicular line.
identify any perpendicular line segments.
AE __ DF , FE __ AI , BF __ EG , CG __ FH
What do you notice about perpendicular line segments? they all meet at 60° angles.
here is a link to a video i watched about line parallel and perpendicular lines.
*HOMEWORK*#1. Are line segments AC and DF parallel?
#2. Are line segments DF and BE perpendicular?
#3. Are line segments AC and BE perpendicular? How do you know?
#4. Would a line segment joining A to D be parallel to a line segment BE? How do you know?
Monday, November 9, 2009
Friday, November 6, 2009
Lastly, we have a Term Test on Thursday it will cover the entire term's worth of work. Be sure to start studying now, do not wait until the last minute!
Thursday, November 5, 2009
Number of the test is : 8497.365
1. Half of the number of the test is: 4248.6825
2. Write the number of the test in expanded form: 8000 + 400 + 90 + 7 + 0.3 + 0.06 + 0.005
3. Write the number of the test in written form: Eight thousand, four hundred ninety-seven and three hundred, sixty-five thousandths.
4. Round the number to the nearest 100: 8500
5. What Digit is in the tenths place: 3
6. The number of the test doubled is: 16994.73
7. 123.45 more than the number is: 8620.815
8. 987.65 less than the number is: 7509.715
9. (You do not have to answer this)
10. Cube, the digit in the ones place: 7 x 7 x 7 = 49 x 7 = 343 (No, not 7x3.)
11. Square, the digit in the hundreds place: 4 x 4 = 16
12. Divide the number by 3.55 and round to the nearest hundreths: 2393.62
13. The product of all digits in the number of the test is: 181440
*Please comment and tell me what I did wrong if there are mistakes. I will edit it to make sure it's right.
Pg. 71-73 #4-24 .. First do even, after do odd numbers. (ex: first do answers 4, 6, 8, etc. then do 5, 7, 9, etc.)
Also, PLEASE study for the test next week. Sorry to tell you guys but .. WE 7-43 HAVE 2 tests next week, one on Tuesday and one on Thursday.
Wednesday, November 4, 2009
1. Half of the number of the day is: 1345.674
2. Write the number of the day in expanded form: 2000 + 600 + 90 + 1 + 0.3 + 0.04 + 0.008
3. Write the number of the day in written form: Two thousand, six hundred, ninety one and three hundred, forty-eight thousandths.
4. Round the number of the day to the nearest 100: 2700
5. What is the digit in the tenths place: 3
6. The number of the day doubled is: 5382.696
7. 123.45 more than the number is: 2814.798
8. 987.65 less than the number is: 1703.698
Tuesday, November 3, 2009
Today at math we were learning BEDMAS.
1st B- ( brackets )
2nd E- exponents 32, 43
3rd D- division
4th A- addition
BEDMAS describes as the order of operations or the order of which you operate an equation.
To practice our knowledge, we were given equations to solve:
G. Create an equation that includes +, -, x, ÷, exponents, and brackets. The answer will equal 6. You can't repeat any number more than once and you can't use zero. Explain why you think my equation is right or wrong. If wrong, give an equation that is right and tell me what I did wrong.
This is the equation I got to get my answer:
Monday, November 2, 2009
(1.75-0.5) times (4.2\0.6+7.3-1.2
0.70 times ( 4.2 \ 0.6) + 7.3 -1.2
0.70 times 7 + 7.3 - 1.2
What sign goes were
2 times 3 \ 6 + (2-1)
2 times 3 \ 6 + 1
6 \ 6 + 1
1+1 = 2
Annie has been asked to calculate 1.7 + 6 \2. she claims the answer is 3.85. do you agree or disagree? Explain why or why not. I think it is wrong because I 1.7 + 6 \ 2 then 1.7 + 3=4.7 so I think it is wrong.
www.coolmath.com/prealgebra/05-order-of-opera... (its a pic)
the best song ever :D http://www.youtube.com/watch?v=M11SvDtPBhA
Tuesday, October 27, 2009
Monday, October 26, 2009
(:(: (:(: (:(: - 3 groups of 2 smiley faces.
The word Quotient is the answer to the division question.
If you have 6 dollars and you need pens for scrap booking that are 0.40 cents each?
We used 10x10 grids to solve this problem.
I did my grid like this :
(every colour represents a new type of pen.)
The number you could get with $6 is 15 glitter pens.
If you look at the two first pictures
= 5 glitter pens. and this is equal too $2 , 2 goes into 6 3 times. So, multiply the 5 x 3 = 15 glitter pens.
Now if you estimate, and make it an EASIER question, this is how you do it.
.40 round it off to 0.50 and round it to 2.
+2 - 2
6 - 6
8 - 8
10 - 10
12 - 12
Where to put the decimal?
Round 3.6 to 4.
Now, change the question to a multiplication question.
Now divide the 16 by 4.
4 is nearer than 42. So put the decimal between the 4 and the 2.
This is a lady showing you how to divide decimals, if you need any help.
Tuesday, October 20, 2009
One thing the video brought up is that even though it looks like the answer is 3,864 you have to consider the numbers after the decimal point that hold value. In the equation the digits .1 and .4 are after the decimal point so you move the decimal point two places to the left. You will get 38.64 instead of 3,864.
I'm sorry about the fact that my keyboard doesnt have a divide button on it.
Remember: Math Links page 57-59 numbers 3-21 isn't homework
Here's an excellent link to a website that explains the concept of multiplying decimals well.
Monday, October 19, 2009
What is the total when estimating?
1.69 x5= Tax is included.
Younger sister says it only costs 5 bucks.
Older brother says it only costs 10 bucks.
What are they thinking, how are they estimating?
Younger sister is thinking Under estimating, just 1.00x5= $5.00
Older brother is thinking Over estimating, 2.00x5= $10.00
Where do the decimals go?
2.2 x 1.8= 3960
Where do the decimals go here?
3.9 x 5.8= 22620
Is $9.00 enough and prove it.
2.57 x 0.45= 118220
Pronghorn: 58kg Dall's: 1.5 times as much as a pronghorn.
How much does Dall's weigh?
Approximate: 90kg. 60x1=60 kg.
90 kg. (In between the two weights.)
46x2.5 = 64x4.5 = First estimate then calculate.
Here is a video for multiplying decimals. If you click multiplying decimals it will take you to a link that explains the multiplying of decimals. Good Luck and I hope it isn't hard to understand.
Mr.Isfeld will be collecting number of the day tomorrow.
Friday, October 16, 2009
Link- highlight a word and press the green button. Then look for a site that you think would build interest and that is about the topic. Then you copy and paste the URL. After you get a link, click preview to check the link. Check out this link!
Image- find an image (google image) then save it to your computer. Then browse and find the image. You can change the layout and size. Then press upload image. See this image!
Video-Go to youtube and find a video that will build interest about the topic you are discussing. Once you've found a video, click on the grey box anf highlight and copy the code that is in the box titled "embed". Then click edit HT.ML. Scroll to the bottom then pick the code and press preview. See this video!:
Font-To change the font, click the arrow next to the word "font." Scroll down and find a don't that you like and that all can read.
Colour-To change the color, click on the T with the colored squares. Then choose a color. It is best to change the color of important facts, but try not to use bright colors that are hard to see.
Size- To change the size, click the sign with the double T's. Then change the size you want to write with. Don't pick anything too small or too large.
Suzie will compose our first scribe on how to create a scribe.
Everyone else will leave a comment. You must leave something nice and something helpful.
Good luck and have a good weekend.