Parallelogram

Parallelogram- a four sided figure with opposite sides parallel and equal in length.

Base- a side of a closed 2d figure.
- common symbol is b

Height- the perpendicular distance from the base to the opposite side.
- common symbol is h.

This is what some of the parallelograms look like.



Area of a Parallelogram.
To find the area of a parallelogram, you need to do Base x Height (b x h).


Height is the one the look likes the letter h.

Here is a video to help.



Here is a link: http://www.mathsisfun.com/area.html

angle bisector

Bisector: to cut in 2
Bi:2
Sect:cut

Acute Angle: less than 90 degrees

Right Angle: 90 degrees

Obtuse Angle: greater than 90 degrees and less than 180 Degrees

How to make a perpendicular bisector

Definition of the word 'Bisect':
Bi=two
Sect=cut
Bisect=to cut on two

There are 3 way on how to make a perpendicular bisector:

Way #1:

What you'll need:

• Paper
• Pencil
• Compass(math tool)
• Ruler

1. You first draw a line segment. Lable the ends line segment AB
2. Place the sharp end of the compass on point A.
3. Make an arc that is slightly larger than half of the length of the line segment.
4. Repeat the process to point B. *REMEMBER USE THE SAME SIZE OF THE ARC USED ON POINT A!*
5. With a ruler join the two are intersections with a straight line.

Way #2:

You will need the following...

• 
• Pencil
• Right triangle
• Paper
• Ruler
  

1. Draw a line segment. Lable the points AB
2. Measure the line segment with a ruler.
3. Devide the measure in half; that is now called the half way point.
4. Use the right triangle to create a perpendicular line a the half way point.

Way #3:

You will need the following...

• Pencil
• Paper
  

1. Draw a line segment. Lable the points EF.
2. *Make sure you're in a well lit room.*
   
3. Fold the paper so point A falls right on top of point B.
4. This will make the crease a perpendicular bisector!

Here's a link to help you more on perpendicular bisectors!
Also a video...

line segments

How to construct perpendicular line segments :

1. Use a ruler to draw a line segment AB

2. Place the edge of a right triangle on the line segment AB

How to construct parallel line segments :

1. use a ruler to draw line segment CD

2. use a right triangle to make a perpendicular line segment .
3. slide the right triangle left or right along the line segment CD and draw another

perpendicular line segment lableled GH .

Here is a video to help you :

Here is a link to help you :

http://www.mathopenref.com/linesegment.html

Orders of operation- BEDMAS

B- Brackets ( )

2

E- Exponents 2

D- Division

M- Multiplication In order from left to right.

A-Addition

S- Subtraction In order from left to right



Example for using BEDMAS



2x2+2=? is it 6 or 8
\ /

2 x4=6

Order of operations

Bedmas
B- Brackets

E- Exponents

D- Division

(In order from left to right)

M- Multiplication

A- Addition

(In order from left to right)

S- Subtraction

Q:
Annie has been asked to calculate 1.7+6 divided 2. She claims that the answer is 3.85. Do you agree?
Explain why or why not
i don't agree because she didnt use BEDMAS

Example:
24-4 multiply 2 + 3=
24 - 8 + 3=
16 + 3 = 19

Another example

2 multiply(4+8) divide 2 - 1=
(4+8) divide 2 - 1=
2 multiply 12 divide 2 - 1 =
12 - 1 = 11
Brackets comes first because it's first on bedmas.

BEDMAS

B- brackets ( )

E- exponents

D- division

(In order from left to right)

M- multiplication x

A- addition +

(In order from left to right)

S- subtraction -

Q:

Annie has been asked to calculate 1.7 + 6 divided 2. She claims that the answer is 3.85. Do you agree?

EXPLAIN WHY OR WHY NOT!

I don't agree because she didn't use BEDMAS.

EXAMPLE

(2+3)-1=

Brackets come first come first because It's fist on Bedmas.

ANOTHER EXAMPLE

6-7x5=

Multiplication goes fist because It's before everything else if you use Bedmas.

HERE IS A VIDEO TO HELP!

Here is a LINK to help you out!

3 questions

1.Annie has been asked to calculate 1.7+6/2.She claims that the answer is 3.85.Do you agree/.Explain why or why not
I don't agree because if you use BEDMAS:
1.7+6/2
1.7+3
4.7

2.put brackets in the following expression to get the largest value possible.What problem solving strategy did you use? 3x2.8+6.4 ÷ 4
You can do it 2 ways:
(3x2.8)+6.4 ÷ 4
8.4+6.4 ÷4
8.4+ 1.6=
10
or
3x2.8+(6.4 ÷ 4)
3x2.8 1.6
8.4+ 1.6=
10
Here's a video that might help you!

3.Create a problem that could be solved using th following expression:2.5+1.25+5x 1.6
Jayne is on garage sale she saw a set of 2 plate and cup for 2.5.She saw a pencil case that have 5 unused eraser on it on it that cost 1.25.Then saw a pack of pencil that cost 1.6 then she buy 5 of them.Thetotal of things she bought $11.75

question

Older of operatins

the language of math.

B- brackets ( )

E- exponents

D- division (/)

(in older from left to right.)

M- multiplication

(in older from left to right.)

A- addition

S- subtraction

Question;

Annie has been asked to calculate 1.7 + 6 ÷ 2. She claims the answer is 3.85. Do you agree? Explain why or why not.

I Don't agree because the didn't use BEDMAS.

EXAMPLE.

2/4/2x6=

2+2x6=

2+12=

14=

here's the link to help you at home.

PICTURE LINK

Here's the VIDEO to help you.

---> http://www.youtube.com/watch?v=VvlhJ64ID9Q <----

Order of Operations

Bedmass :

B : Brackets ( )

E : Exponents

D : Division

M : Multiplication

A : Addition

S : Subtraction

Question 1 :

Annie has been asked to calculate 1.7 + 6/2 .

She claims the answer to be 3.85.

Do you agree ? Explain why or why not .

Answer :

Annie only got 3.85 because she didn't use BEDMASS.

She got the answer 3.85 this way :

1.7 + 6 = 7.7

7.7/2 = 3.85

The real answer should have been :

1.7+6/2

6/2 = 3

1.7 + 3 = 4.7

Question 2 :

Put the brackets in the following expression to get the largest value possible .

What problem solving strategy did you use ?

Answer :

I have put the brackets between in the question like this : ( 3 x 2.8 ) + 6.4/4 =

The answer would be 10 which is the largest value you can get !

I have used BEDMASS to solve this problem .

Question 3 :

Create a problem that could be solved using the following expression :

2.5 + 1.25 + 5 x 1.6

Answer :

John is selling pie for her class fundraiser.

One small pie is $ 2.5.

But if you buy 2 pies you can get them for $ 1.25.

And also john has a sign that says :

If you buy 3 pies you get them for $1.6.

Five people came and each got 3 pies each.

If you still need a little More help then her is a link

And her is a link to a video to show you more about BEDMASS

Also her is a picture to show you guys and girls how BEDMASS works :

BEDMAS

http://http://www.youtube.com/watch?v=oyGG4caBG4k

Brackets- ( )
Exponents- a2
Division- (in order from left to right)
Multiplication-(in order from left to right)
Addition-1+2=3
Subtraction-1-1=0


link to help you with BEDMAS and to show you how it works.

B.E.D.M.A.S

B- Brackets ( )
E- Exponents
D- Division (in order from left to right)

M- Multiplication
A- Addition (In order from left to right)

S- Subtraction


You just have to remember to do it in order and then bring down the rest of the numbers.



Here is a picture to help

Annie has been asked to calculate 1.7 + 6 ÷ 2. She claims the answer is 3.85. Do you agree? Explain why or why not.

I don't agree because Annie added 1.7 + 6 first which would make the answer 7.7. She should have divided 6 and 2 then added 1.7 to make 4.7.

Here is a link to help

http://www.learnalberta.ca/content/mejhm/index.html?ID1=AB.MATH.JR.NUMB&ID2=AB.MATH.JR.NUMB.INTE&lesson=html/object_interactives/order_of_operations/use_it.html

heres a viedo to help

hope this helps

I hope this helps

Order of operations 2

Question 1:
Annie has been asked to calculate 1.7+6/2.She claims the answers is 3.85.Do you agree?Explain why or why not.
Answer:
Annie only got 3.85 because she didn't use BEDMAS.She did it this way to get her answer.
1.7+6=7.7
7.7/2=3.85
This is the real answer:
1.7+6/2=
6/2=3
1.7+3=4.7
Question 2:
Put the brackets in the following expression to get the largest value possible. What problem solving strategy did you use?
Answer:
I'd put the brackets between in the question like this---->(3x2.8)+6.4/4=
The answer would be 10 whick is the largest value you can get.I used BEDMAS to figure out the answer.
Question 3:
Create a problem that could be solved using the following expression:
2.5+1.25+5x1.6=
Answer:
Ella is selling paintings for her class fundraiser.one small painting is for $2.5 but if you buy two paintings you can get them for $1.25.Another deal Ella has is that if you buy three you can buy them for $1.6. Five people came and each person bought three paintings each.At the end of the day Ella made $8.

Here's a link that might help you:
http://www.mathsisfun.com/operation-order-pemdas.html



Here's a video that might help as well.

Order of Operations

BEDMAS

B-Brackets ( )

E-Eponents a2

D-Divison
(in order from left to right)
M-Multiplication

A-Addition
(in order from left to right)
S-Subtraction


Here is a link to show you how BEDMAS works http://mathcentral.uregina.ca/QQ/database/QQ.09.07/h/brit1.html

Look at the photo for an example

Just remember that you have to do them in order.
So you need to remember what each letter in BEDMAS stands for or means .



Here is a video:

How I Solved The Following Questions!

B- brackets ( )

E- exponents

D- division

( in order from left to right )

M- multiplication

A- addition

( in order from left to right )

S- subtraction

1 example

/= to divide

*= to multiply

1. Annie has been asked to calculate 1.7 + 6/2. She claims the answer is 3.85. Do you agree? Explain why or why not.

Answer: I don't agree because 6/2 = 3, 1.7+3 = 4.7

2. Put brackets in the following expression to get the largest value possible. What problem solving strategy did you use? 3* 2.8 +6.4 /4.

Answer: (3*2.8) + 6.4 /4= 10

3*2.8 + (6.4 /4) = 10

3* (2.8 + 6.4) /4 = 6.9

3. Create a problem that could be solved using the following expression. 2.5+1.25+5*1.6

Answer: Katty went shopping for new outfit. She saw a top that was $2.50 then she saw a scarf that she thought would look good with the top and she bought it for $1.25. Then she bought some jewelry that was 5 bucks each. Then she added all those things together which made 8.75 then she multiplied that with 1.6 because of the tax which made it $14.00 altogether.

Here's a link to help you if your still stuck:

http://http//www.studygs.net/pemdas/

And a video to just in case:

Order of Operation

This is the language of math!

Brackets
Exponents
Division
Multilplication
Addition
Subtraction

(0.75 - 0.5) x (4.2 ÷ 0.6) + 7.3 - 1.2
0.25 x (4.2 ÷ 0.6) + 7.3 - 1.2
0.25 x 7 + 7.3 - 1.2
1.75 + 7.3 - 1.2
9.05 - 1.2
7.85

try this website for more help.






watch this video for help.

Answers for 3 Questions

1. Annie has been asked to calculate 1.7 + 6 / 2. She claims the answer is 3.85. Do you agree? Explain why or why not.

I don't agree because first you have to divide 6 into 2 which makes 3. Then you have to add 3 to 1.7 which makes 4.7.

2. Put brackets in the following expression to get the largest value possible. What problem strategy did you use? 3 x 2.8 + 6.4 / 4

I used: (3 x 2.8) + (6.4 / 4) = 10

3. Create a problem that could be solved using the following expression:
2.5 + 1.25 + 5 x 1.6

(2.5 + 1.25) + (5 x 1.6) = 11.75

BEDMAS

BEDMAS Is the sequence of operations that must be followed when solving a math sum with several different operations in it.



Brackets=( )

Exponents= a* or ^

Divisions = /

Multiplication=x

Addition=+

Subtraction=-



For eg:


Following the steps of BEDMAS
2x(4+8)/2-1=
1. Bracket..add (4+8)

2x(12/2)-1=
2. divide (12/2)

(2x6)-1
3. multiply(2x6)

12-1=11
4. subtract(12-1)




Here is some to practise:



3x(5+4)/3+3-4=

3x(9/3)+3-4=

(3x3)+3-4=

(9+3)-4=

12-4=8



4+(8/2)-4x2=

4+4-(4x2)=

(4+4)-8=

8-8=0



TIP: Insert a new bracket every time you are doing the next operation in the rule of BEDMAS.

Here is a link to help you out:

http://mathcentral.uregina.ca/QandQ/topics/bedmas



Here is some video's for you.

http://www.youtube.com/watch?v=ZOs_NjLtIHc&feature=channel

http://www.youtube.com/watch?v=gMZcgftBIH0

http://www.youtube.com/watch?v=BdaZdloHiCg&feature=channel

Order Of Operations

BEDMAS




B - brackets ( )

E - exponents


D - division

( in order from left to right)



M - multiplication

A - addition


( in order from left to right)


S - subtraction

Look on the right side for an example :







Just remember that you have to do them in order.
So you need to remember what each letter in BEDMAS stands for or means .

Here's a video to help you :

order of operations 2

1. Annie has been asked to calculate 1.7 + 6 ÷ 2 . She claims the answer is 3.85 . Do you agree ? Explain why or why not .

Answer: i dont agree with her because 6 ÷ 2 = 3 , 3 + 1.7 = 4.7.


2. Put brackets i the following expression to get the largest value possible . What problem solving strategy did you use ?

Answer :
(3 × 2.8) + 6.4 ÷ 4 = 10
3 × (2.8 + 6.4) ÷ 4 = 6.9
3 × 2.8 + (6.4 ÷ 4) = 10


3. Create a problem that could be solved using the following expression : 2.5 + 1.25 + 5 x 1.6 .

Answer :
Bob wanted to buy new shoe laces they were $2.50 , then he saw shoe cleaner he wanted it was $1.25 then he decided to buy 5 gel shoe liners they were $1.60 each . His total bill was 11.75 .


Here is a video to help you understand order of operations :



Here is a link to help you :
http://www.scweb4free.com/oper.html



Here is a picture to help you :

Order of Operations

B-brackets
E-exponents
D-division
M-multiplication *
(in order from left to right)
A-addition
S-subtraction
(in order from left to right)
here is an example:
Here's a video that might help!

Order of operations

b.e.d.m.a.s

brackets ( )

exponents

division

multiplycation

addition

subtraction

2+3x4= could be 14 or 20

2+12=

14 show your work

0-34 3x(80x5)=

0-34 3x 400

0-34 1200

1166 show your work

Math Questions 1-3

1. Annie was asked to calculate 1.7 + 6÷2. She claims the answer is 3.85.
Do you agree?
Explain why or why not.

No, I do not agree with Annie because the first thing you had to do was divide 6 by 2, so the answer is 3.

1.7 + 3 = 4.7

Annie got the answer 3.85 by adding 1.7 to 6 to get 7.7, then divided 7.7 by 2 to get the answer 3.85.


2. Put brackets in the following expression to get the largest value possible.
What problem solving strategy did you use?

3 × 2.8 + 6.4 ÷ 4 = ?

(3 × 2.8) + (6.4 ÷ 4) = 10


3. Create a problem that could be solved using the following expression.

2.5 + 1.25 + 5 × 1.6 = 14

Emma was shopping for school supplies, and bought a calculator for $2.50. Then she bought a box of pens for $1.25, and 10 pencils for $5. Without the taxes, Emma would have to pay $8.75, but with the taxes, she would have to pay $14 for the school supplies.

B.E.D.M.A.S what it stands for & an example

B- Brackets ( )
E- Exponents A big 3 & a small 2 at the top
D- Divison 5 divided by 5
M- Multipaction 10x2
A- Addition 6+6
S-Subtraction 3 - 1

Now here is an example of all of these .

Here it will be on this picture, I created in paint .

Answers for 3 question's

Annie has been asked to calculate 1.7+6÷2 she claims the is 3.85. Do you agree? Why or why not.

I don't think the answer is 3.85 because if you use bedmas the answer is 4.7 my proof:
1.7+6÷2
6÷2=3
1.7+3
4.7
She used a calculator so she put 1.7+6÷2=3.85

Put brackets in the following expression to get the largest value possible .What problem solving strategy did you use?

3x2.8+6.4÷4 i think the brackets go in between go the (6.4÷4) because when you do bedmas to answer it, it makes 10

create a problem that could be solved using the following expression.

2.5 + 1.25 + 5 × 1.6

James was at a store and decided he should buy some cupcakes for $2.50. He saw some pears that he wanted to buy and it cost him $1.25. Last bought not least James bought five cases of cookies for $1.60 each. Everything he bought added up to $11.75

heres a link to try out http://www.ixl.com/math/grade/seventh/

Order of Operations

The language of math.

B - brackets

E - exponents

D - division

M - multiplication

A - addition

S - subraction


Here is an example!



Here is a video that might help!



And here's a link !

B.E.D.M.A.S. 2

B- Brackets ( )

E- Exponents

D- Division /

M- Multiplication *

(In order from left to right)

A- Addition +

S- Subtraction -

(In order from left to right)

ex: (0.75 - 0.5) * (4.2 / 0.6) + 7.3 - 1.2 =

(0.75 - 0.5) * (4.2 / 0.6) + 7.3 - 1.2 =

0.25 * (4.2 / 0.6) + 7.3 - 1.2 =

0.25 * 7 + 7.3 - 1.2 =

1.75 + 7.3 - 1.2 =

9.05 - 1.2 =

7.85

Here is an illustration of it if you are confused.

• Annie has been asked to calculate 1.7 + 6 ÷ 2. She claims the answer is 3.85. Do you agree? Explain why or why not.

I don't agree because Annie calculated 1.7 + 6 first which would lead to the answer 7.7. She should have divided 6 and 2 then add 1.7 which will lead to the answer 4.7.

• Put brackets in the following expression to get the largest value possible. What problem solving strategy did you use? 3 × 2.8 + 6.4 ÷ 4

3 × 2.8 + (6.4 ÷ 4) = 10

(3 × 2.8) + 6.4 ÷ 4 = 10

3 × (2.8 + 6.4) ÷ 4 = 6.9

• Create a problem that could be solved using the following expression.

2.5 + 1.25 + 5 × 1.6

Create your own answer by putting brackets on this expression.

To practice this, click this link:

http://cemc2.math.uwaterloo.ca/mathfrog/english/kidz/order.shtml

For students who like music and wants to not watching really boring and long videos but still want to learn, watch this then!!!