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4.2 Fractions, Decimals, and Percents
Write the following percents as a fraction and as a decimal:
1
53 %
4
3
%
4
34%
*_, _, and _ can be used to represent
numbers in various situation
REMEMBER:
Percent is something out of one hundred!
In order to
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8.5 Notes: Applying Integer Operations
BEDMAS
Calculate the following:
(-10) (-2) (+4) x (+6) =
(-16) [ (+5) (+6) + (-7) ] =
(-3) + (-4) x (-2) (+6) =
(-2) - (+4) x (-5) (+2) =
Can you predict whether: (-) x (-) x (-) (-) x (-) x (-) is positive or
Math 8
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8.4 Notes: Dividing Integers
Complete the following table:
Multiplication Statement
Division Statement
A different division statement
(+4) x (-3) = -12
(-12) (-3) =+4
(-12) (+4) =-3
(-5) x (-2) = +10
(-4) x (+5) = _
(+2) x (+7) = _
(+8) x (-
Weather this week is cold. The daily temperatures were (+3o), (-1o), (+2o), (-4o),
and (+5o). Determine the mean temperature.
+/- ratings are often used in sports. Kevin Bieksa had the following ratings in his
last 4 games.:
What is his total +/- for the
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9.2 Notes: Patterns in a Table of Values
Alvin is cooking a turkey in a very old oven, and needs to heat the turkey to an
internal temperature of 250 degrees. For absolutely no reason at all, he decides
to make a table of values comparing how long
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8.3 Notes: Multiplying Integers
Multiply the following pairs of numbers:
(+4) x (+2) =
(-6) x (+2) =
(-2) x (-3) =
(+3) x (-5) =
(+7) x (+1) =
(+8) x (-3) =
(-4) x (-3) =
(+0) x (+2) =
(-3) x (-3) =
What do you notice about the products of each que
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8.1b Notes: Subtracting Integers
Use integer chips and a number line to represent each subtraction:
(+5) (+3) =
15
14
13
12
(+6) (+5) =
11
10
9
8
7
6
5
4
3
2
1
0
1
2
3
4
5
6
7
8
9
10
11
What happens when you subtract a positive number?
How might yo
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3.2 Notes: Exploring the Pythagorean Relationship
For the right triangle shown, complete the
table:
Area of
Side
Side Length
Square
a
6
b
8
c
10
For the obtuse triangle shown, complete the
table:
Area of
Side
Side Length
Square
a
5
b
7
c
10
Vocabul
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1.1 Advantages and Disadvantages of Different Graphs
Identify each graph:
Line Graph, Bar Graph, Double Bar Graph, Pictograph, Circle Graph
2
Christina is doing volunteer work in Uganda and asks several of the local people
what their favourite musi
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3.3 Notes: Estimating Square Roots
Chris is 15 and is the oldest of 3 siblings. His sister, Jamie, is 10 and is the
youngest. How old could their brother, Ryan, be?
Many square roots are not easy to find out
without using your calculator, but you c
Math 8
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4.1 Representing Percents
Can you think of places in real life where we use
percents?
Percent can be represented in a variety of
different ways. Can you think of them?
Where do you think the word Percent
comes from, and what does it mean?
Ba
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8.1a Notes: Review of Adding Integers
When Marty comes home, the temperatures is 6 degrees Celsius, but
overnight the temperature drops by 8 degrees.
a) Write 2 different equations that could be used to find the answer.
b) What would the new temper
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4.4 Combining Percents
What are PST and GST?
The rates of taxes in British
Columbia were:
GST:
PST:
What is HST?
HST:
Example:
A Coach Purse costs $250. If there is 7% PST and 5% GST, what is the cost of the
jacket after taxes?
Method 1: Finding th
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5.1 View of 3 Dimensional Objects
Vocabulary:
Vertex:
Edge:
Face:
It is hard to draw a 3 dimensional (3D) object on 2 dimensional surfaces like paper.
To accurately describe a 3D object, we often break it into 3 views:
_, _, _
A minimum of 3 views