## Wednesday, December 16, 2009

## Monday, December 14, 2009

0.4821428

0.5

60%

b) 125/396 (thousandths)

0.3156565

0.316

31.6%

c) 1496/2005 (hundredths)

0.746134663

0.75

35%

Repeating decimal:

A decimal number with digit or group of digits that repeats forever.

- repeating digits are shown with a bar.

eg. 0.777777.... = 0. Bar 7

Use calculator to convert these fractions to a repeating decimal.

a) 1/3

0. bar 3

b) 5/9

0. bar 5

c) 5/6

0.8 bar 3

Terminating decimal:

- a decimal number in which the digits stop.

-examples include 0.4, 0.86, 0.125

0.75 seventy-five

hundredths

75/100 = 3/4

HOMEWORK

a) 28 out of 8 b) 421 out of 560

Change each terminating decimal to a fraction.

Simplify the expression

(2+1) 2+ 3x4 2 divided by 2

Construct an angle bisector of a 60 degrees angle.

## Tuesday, December 8, 2009

### Difference

**"Whole Numbers"**that are

**between**7 and 13 are :

8, 9, 10, 11, and 12

The

**difference**between 13 and 7 is

**6**

Half this difference is 3

6 divided by 2 = 3

The

**number ID**is

**halfway**between 7 and 13

7 + 3 = 10

**or**13 - 3 = 10

If you still don't understand this information try and solve these questions that we did during class.

1. What are the whole numbers between 68 and 72, 108.3 and 111.6

Answer : 69, 70, and 71 Answer : 109, 110, and 111

2. What number is halfway between the given numbers? a. 70 and 170 b. 1801 and 1813 c.18.4 and 6.2.

**Answers :**a.120 b.1807 c.12.3

3. Is the number in the middle closer to the left number or the right number?

30/38/40 0.6/3.4/6.6 0.891/0.732/0.641 78.68/78.22/77.77

Right Left Right Right

**Whole Number**- a whole number is a number without a decimal ; must also not have any place value below 0, for e.g. tenths, hundredths, thousandths, etc.

**Between**- anything in the middle of things. for e.g. my desk is between Diana and Kathryn in math.

**Difference**- how many numbers it takes to get from one number to another. 7 and 13 would be 6 because it goes 7,8,9,10,11,12,then 13, 6 numbers to get from one to the other.

**Halfway**- a word used to describe something that is divided into 2 equal parts.

## Monday, November 30, 2009

### "Area of a Triangle"

A three sided figure

Have three angles

e.g.

or area= 45 meters squared

Here is some link to truelly understand how to finding the area of a triangle:

http://www.youtube.com/watch?v=xz6gBA0M9FY&feature=related

## Wednesday, November 25, 2009

### Area

this square has an area of 4 square units

Area is the surface space a shape takes up.

Area of square or rectangle

Length x Width= area

L x W= area

eg.

area=L x W

area= 6x3

=18cm2

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

eg.

Base(b) - a side of two-dimensional closed figure(shape)

Height(h) - the perpendicular distance from the base to the opposite side.

Base(b) is 5cm and height(h) is 3cm. Plug those value into the formula

A=b x h

A=5 x 3

A=15cm2

Find the area of this parallelogram

Find the area of this parallelogram

A=b x h

A=12 x 4

A=48m squared

Homework:

## Monday, November 23, 2009

### Angles

**Angles - space between 2 connecting lines**

**Acute**- an angle that is less than 90°

**Obtuse**- an angle that is greater than 90°and less than 180°

**right- exact 90°**

-equal angles are not mark with the same symbol

How to make an angle bisector

Method 1

1. use compass make an arc from the vertex that crosses both arms label them X and Y.

2. make an arc from point X and Y they must be equal size.

3. draw a line from point B to the arc intersection.

Method 2

1. use protractor measure the angle D,E,F .

2. divide your measurement by two.

3. make at 54 using protactor labelled Q

y) Join point Q with a straight line.

## Wednesday, November 18, 2009

### How to make Perpendicular lines.

Bi- means two

Sect- means to cut

So bisect means to cut in two.

Directions:

1. Draw a line

2. Fold so pt A is on top of pt B.

3. Use a ruler to draw a line in the crease made by the fold.

4. Label the point where the two lines segments intersect P.

5. Measure the lengths of AP and BP

What do you noticed?

7. Use a protractor to measure the 4 angles created.

What do you notice? they are all 90*

You have created a perpendicular bisector

- a line that divides another line segment in half and is at right angles to it.

-equal line segments are marked with " hash" marks.

use a right triangle

1. Find the length of the line segment.

2. Determine the half way point.

3. Use right triangle to create a perpendicular line.

3rd way to make a perpendicular bisector.

use compass.

step one: make an arc from point A is greater then half way.

step two: make an equal sized arc intersections with a straight line, that line is a perpendicular bisector.

Draw a 12cm line segment label it PQ. Draw the perpendicular bisector of this line segment, all three was. Label the point where they intersect R.

a. what are the lengths of PR and PR?

b. what does it mean if the lengths are different?

## Monday, November 16, 2009

### Geometry

**Parallel**-describes lines in the same plane that never cross or intersect.

**Perpendicular**-describes lines that intersect at right angles (90 degrees).

**Measure the distance from:**

A to B = 8.9 cm

B to C = 8.9 cm

E to F = 8.9 cm

F to G = 8.9 cm

I to J = 8.9 cm

J to K = 8.9 cm

**What do you notice about parallel lines?**

Always are the same distance apart no matter where you measure as long as you measure using parallel lines.

**Identify any parallel line segments**

AE // BF

BF // CG

EI // FJ

FJ // GK

AI // CK

**Identify any perpendicular line segment**

AE to DF

BF to EG

CG to FH

IE to DF

**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?

## Friday, November 6, 2009

### Term Test

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 Day

Half of the number of the day is: 4248.6825.

Write the number of the day in expanded form: 8000+400+90+7+0.3+0.06+0.005=8497.365.

Write the number of the day in written form: eight thousand four hundred ninty-seven and three

hundred sixty-five thousandths.

Round the number of the day to 100: 8500.

What digit is in the tenths place: 3.

The number of the day doubled is:16994.730.

123.45 more than the number is: 8620.815.

987.65 less then the number is: 7509.715.

Cube the digit in the ones place: 7 times 7 times 7 = 343.

Square the digit in the hundreds place: 4 times 4 = 16.

Divide the number by 3.55 and round to the nearest hundredth: 2393.62.

The product of all the digits in the number of the day is: 8 times 4 times 9 times 7 times 0.3 times 0.06 times 0.005= .181440.

Homework

p.g 71-73 # 4 - 24 even only.

DON"T FORGET!!!!

QUIZ ON TUESDAY AND TEST ON THURSDAY

so study, study, sudy!!!!!!!!

## Wednesday, November 4, 2009

## Tuesday, November 3, 2009

### Scribe Post November 3, 2009

We had to use BEDMAS to explain these equations

BEDMAS means :

Brackets

Exponents

Division

Multiplication

Addition

Subtraction

A)

2+3x4=

2+12

= 14

B)

10-6/2=

C)

(2+3)x4=

5x4

=20

D)

(10-6)/2=

4/2

=2

E)

8/2²=

8/4

=2

F)

4x3/2+5=

12/2+5

6+5

= 11

G) Create a math equation including +,-,/,x, exponents, and brackets. The answer must be 6 and you can't repeat any digits or use zero.

(8/4) x1²+9-5

2x1+9-5

2+9-5

11-5

= 6

Here is a video to help you with BEDMAS and a link to help you understand BEDMAS:

BEDMAS

## Monday, November 2, 2009

There are four operations

-Multiplication,Division=brothers

-Addition,subtraction=sisters

1st: brackets

2nd:exponents

3rd:division or multiply in order form left to right

4th: addition or subtraction in order form left to right

6.4+120x1.25=158

2x3/6+(2-1)=2

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.

## Tuesday, October 27, 2009

**To get close to the answer**

*Why we estimate*-20÷4=0.5 1/2 L over

1.0÷4=0.25 1/4 L under

1.2÷4=0.3

1.6

1.6÷4=0.4

0.46

*Long Division*

4 divide by 1.36=0.34

3 divide by 879=293

*Number Line*

## Monday, October 26, 2009

### Dividing Decimals

**means that in the statement 6 ÷ 2 = 3 There are 3 groups of 2 in 6. As you can see on the image to the right.**

*Division***Quotient**- anwer to a division question.

You have $6.00. You need pens for a scrapebooking. Fancy glitter pens cost $0.40 each. How many glitter pens can you buy with $6.00?

**: You can buy 15 glitter pens with $6.00.**

*Answer*Place the decimal where it belongs on the following questions.

15.4 ÷ 3.6= 4277778

4.4÷0.42= 1047619

You can over or underestimate to figure out the answer. Find a way that works for you.

*Answer :*15.4÷3.6= 4.277778

4.4÷ 0.42=10.47619

*Homework*

*Place the decimal in the correct spot.*

*20.1 ÷ 4.7= 42766*

*3.5÷ 0.213=164319*

*You may want to go to these websites if you want to learn more about dividing decimals and other math stuff.*

*http://www.mathsisfun.com/*http://www.math.com/school/subject1/lessons/S1U1L6GL.html

Here are some videos to help you with dividing with decimals and remember decimals are related to fractions and percentages.

I hoped you enjoyed my scribe and remember to leave a comment!!

## Wednesday, October 21, 2009

### How to estimate

**5463+5675=?**

You probaly know that

**5000+5000=10000**and

**400+600=1000**add them together and it makes

**11000**.

**75+63**will take a little longer so you just have to estimate estimateing is somewhere around the number so lets just say it makes

**125**this will help you with bigger numbers or multiplication questions.

**Remember estimateing is NOT exact!!!**

Below is a video of how to estimateb please enjoy

## Friday, October 16, 2009

### How to Scribe October 16, 2009

**Image**

**Video**

**Font**

**Colors**

**Size**

### Scribe Post Example

**To change the font click the down arrow by the word "font" and choose the font of your choice.**

To change font color, highlight the text and click the T with the colours on it.

To change the font size, highlight text and click the double T.

**To add videos:**

First you need to have a link you want to post.

Obesity

Surface Area

TO POST AN IMAGE...

1) Find a picture

2) Copy link