**
***
Math 8 - Demo
*

The following is a sampling of questions from our Math 8 testbank.

(Upgraded to follow the Western Canada Protocol)

### NUMBER CONCEPTS

**5.**
A short way of writing 6 x 6 x 6 is
- 18
- 42
- 6
^{3}
- 3
^{6}

**12.**
Which statement is false?
- 2
^{4} = 4^{2}
- 2
^{5} = 5^{2}
- 7
^{0} = 1
- 2
^{5} = 32

**23.**
503 000 expressed in scientific notation is
- 0.50 x 10
^{6}
- 5.0 x 10
^{6}
- 5.03 x 10
^{5}
- 50.3 x 10
^{4}

**34.**
Calculate (4 x 10^{0}) + (3 x 10^{-1}) + (5 x 10^{-3})
- 0.04305
- 0.4305
- 4.305
- 40.305

### NUMBER OPERATIONS

**73.**
Calculate 2/3 + 4/5 =
- 6/8
- 8/15
- 1 3/8
- 1 7/15

**88.**
1 7/8 X 2 1/3 / 3 1/4 =
- 26/35
- 1 9/26
- 455/32
- 1365/96

**97.**
An assembly line worker in an auto factory works on 19 cars every 15 minutes. At this rate, how many cars will pass by the worker in 7.5 h?
- 76
- 142.5
- 285
- 570

**117.**
If 3 bars cost $2.34, what is the unit cost?
- $0.78
- $0.83
- $2.41
- $7.02

### PATTERNS

**1.**
3a - 2 translated into words would read
- two reduced by three times a number
- three times a number subtracted from two
- a number added to three and then reduced by two
- three times a number reduced by two

**Use the following formulas to answer questions 13 - 16
**

**13.**
Find the perimeter of a rectangle with l = w = 16 cm.
- 16 cm
- 32 cm
- 64 cm
- 128 cm

**29.**
The coordinates of three vertices of a square are (2, -2), (2, 1), and (-1, -2). What are the coordinates of the fourth vertex?
- (1, -1)
- (-1, -1)
- (-2, -2)
- (-1, 1)

**32.**
If you started at the origin and moved 3 units up, then 4 units left (parallel to the X axis), and then 2 units down, where would you end up?
- (-4, 1)
- (1, -4)
- (4, -1)
- (-1, 4)

### VARIABLES AND EQUATIONS

**45.**
A number decreased by six, then multiplied by 4, is 45. The correct equation for this is
- 4x - 6 = 45
- x - 4 x 6 = 45
- 6x - 4 = 45
- 4(x - 6 ) = 45

**46.**
Jack is two years older than his sister Jane. If the sum of their ages is 20, how old is Jack?
- 9 years
- 11 years
- 14 years
- 16 years

**61.**
Solve m/-0.5 = 21
- m = 21.5
- m = -10.5
- m = 20.5
- m = -20.5

**84.**
The sum of two consecutive integers is -7. What are the integers?
- 9 and -2
- -9 and 2
- -1 and -6
- -4 and -3

### MEASUREMENT

**1.**
A 13 m ladder is leaning against a wall. If it reaches 12 m up the wall, how far is its base from the wall?
- 2 m
- 5 m
- 7 m
- 10 m

**15.**
An isosceles triangle has a base of 3 cm. Each of the equal sides is 7 cm. What is its perimeter?
- 10 cm
- 13 cm
- 17 cm
- 21 cm

**37.**
Washers are made by punching out a circular hole in a circular metal disk. What is the area of the washer if the hole has a 1 cm diameter and the washer has a 3 cm diameter?
- 6.28 cm
^{2}
- 12.56 cm
^{2}
- 25.12 cm
^{2}
- 32.97 cm
^{2}

**61.**
Calculate the surface area of the **Cola Can**.
- 1727.9 cm
^{2}
- 3926.9 cm
^{2}
- 3455.8 cm
^{2}
- 1601.5 cm
^{2}

### 3-D OBJECTS AND 2-D SHAPES

**87.**
The sum of the angles of a hexagon is
- 360
^{o}
- 540
^{o}
- 720
^{o}
- 900
^{o}

**101.**
Triangles ABC and XYZ are congruent. Which statement is false?
- Angle A is congruent with angle X.
- Side AB is congruent with side XZ.
- Angle C is congruent with angle Z.
- Side YX i s congruent with side BA.

**106.**
If the sum of two angles of a trapezoid is 265^{o}, what is the sum of the remaining angles?
- 35
^{o}
- 85
^{o}
- 95
^{o}
- 135
^{o}

**110.**
A school is an example of a(n)
- solid
- shell
- skeleton
- square

### DATA ANALYSIS

**3.**
In conducting his survey on the favorite record of teenagers Jonah questioned only female participants between the ages of 15 and 20. This is an example of
- taking a biased sample
- taking a census
- taking a random sample
- polling a population

**7.**
If there are 190 school days in one school year approximate the number of brown lunch bags that are used in one school year
- 2850
- 4750
- 5700
- 8550

**Use the following pictograph to answer questions 20 - 22.**

**20.**
How much does half of a video represent?
- 10 000
- 8 000
- 5 000
- 1 000

**27.**
What is the median of 16, 13, 18, 29, 24, and 19?
- 18.5
- 23.5
- 19.8
- none

### CHANCE AND UNCERTAINTY

Use the following information to answer questions # 33 - 36.

**"A bag contains 7 red marbles, 3 blue marbles,**

and one black marble."

**33.**
What is the mathematical probability of picking a blue marble?
- 3/11
- 4/11
- 8/11
- 3/10

**39.**
What is the probability of rolling a 2 on a single die?
- 1/3
- 2/3
- 1/6
- 2/6

**40.**
The number of times an event occurs is called
- mean
- mode
- median
- frequency

**41.**
A hockey team has won 7 games, tied 4, and lost 3 games. What is the probability that it will lose the next game?
- 1/14
- 3/14
- 4/14
- 7/14

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