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