Quiz about Grade 8 Math Review

Question 1

-80 + 20

Accepted Answer

-60

Answer

60

Answer

100

Answer

-100

Question 2

-10 + 10

Accepted Answer

0

Answer

20

Answer

-20

Answer

1,000,000

Question 3

If an elevator is on the 10th floor, and it descends 11 floors, what floor is the elevator on now?

Accepted Answer

-1

Answer

0

Answer

-11

Answer

-10

Question 4

10-(-19)=

Accepted Answer

29

Answer

-5

Answer

-29

Answer

30

Question 5

-5-5=

Accepted Answer

-10

Answer

-5

Answer

0

Answer

1

Question 6

What is a rational number?

Accepted Answer

A number that can be represented in the form of a fraction.

Answer

Any number

Answer

A non terminating decimal

Answer

A non perfect square

Question 7

What is the cubed root of 7³?

Accepted Answer

7

Answer

343

Answer

21

Question 8

Which number is an irrational number?

Accepted Answer

square root of 88

Answer

-15 / 7

Answer

square root of 25

Answer

0.3333....

Question 9

According to exponent rules, when we raise the power to a power we _______ the exponents.

Accepted Answer

multiply

Answer

add

Answer

subtract

Answer

divide

Question 10

According to exponent rules, when we multiply the expressions we _______ the exponents.

Accepted Answer

add

Answer

subtract

Answer

multiply

Answer

divide

Question 11

According to exponent rules, when we divide the expressions we _______ the exponents.

Accepted Answer

subtract

Answer

add

Answer

multiply

Answer

divide

Question 12

In 2³what is the base?

Accepted Answer

2

Answer

3

Answer

23

Question 13

In 2³what is the exponent?

Accepted Answer

3

Answer

2

Answer

23

Question 14

Which is equivalent to 5 x 5 x 5 x 5

Accepted Answer

54

Answer

53

Answer

45

Answer

55

Question 15

Simplify the exponential expression:

Accepted Answer

2x2

Answer

10x-2

Answer

2x12

Answer

10x12

Question 16

Simplify
5² x 5^{3 =}

Accepted Answer

3125

Answer

25

Answer

625

Answer

None of these

Question 17

Solve the equation:
-5x = 25

Accepted Answer

x = -5

Answer

x = 20

Answer

x = -20

Answer

x = 5

Question 18

144=12z

Accepted Answer

z=12

Answer

z=20

Answer

z=11

Question 19

x - 62 = 123
How should you show your work to isolate the variable and solve the equation?

Accepted Answer

Add 62 to each side.

Answer

Subtract 62 from each side.

Answer

Multiply each side by 62.

Answer

Add 123 to each side.

Question 20

What is the inverse operation needed to solve for p?
765 = p - 254

Accepted Answer

addition

Answer

subtraction

Answer

multiplication

Answer

division

Question 21

Solve the equation:
x - 5.5 = 10.5

Accepted Answer

x = 16

Answer

x = -15

Answer

x = 5

Answer

x = -5

Question 22

4x + 22 = -34

Accepted Answer

-14

Answer

-22

Answer

16

Answer

-20

Question 23

Solve for w:
-6w + 1 = -11

Accepted Answer

2

Answer

1.2

Answer

12

Answer

-2

Question 24

6p - 5 =13

Accepted Answer

3

Answer

12

Answer

15

Answer

-3

Question 25

What is the first step to solve this equation:
11 - 3x = 44

Accepted Answer

Subtract 11 from both sides

Answer

Add 3 to both sides

Answer

Add 11 to both sides

Answer

Divide 3 on both sides.

Question 26

Solve: 5x - 14 = 8x + 4

Accepted Answer

-6

Answer

6

Answer

-18/13

Answer

10/3

Question 27

3y+6+4y-7=-8

Accepted Answer

y=-1

Answer

y=-8

Answer

y=1

Answer

y=7

Question 28

10(h+1)-4=76

Accepted Answer

h=7

Answer

h=10

Answer

h=4

Answer

h=76

Question 29

Which of the following is an equation?

Accepted Answer

7x = 49

Answer

4x - 7

Answer

3 - 7t

Answer

43x - 9

Question 30

7(1 - y) = -3(y - 2)

Accepted Answer

x = 1/4

Answer

x = 4

Answer

x = 5

Question 31

Find the length of the missing side.

Accepted Answer

52 cm

Answer

25 cm

Answer

42 cm

Answer

48 cm

Question 32

Casey travels from her house directly west to the bank and then directly north from the bank to the mall. She then travels home on the road connecting the mall and her house. What is her total distance traveled?

Accepted Answer

40 miles

Answer

17 miles

Answer

32 miles

Answer

37 miles

Question 33

What is the opposite of squaring a number?

Accepted Answer

square root

Answer

divide

Answer

multiply

Answer

fractions

Question 34

Tanya runs diagonally across a rectangular field that has a length of 40 yards and a width of 30 yards. What is the length of the diagonal, in yards, that Tanya runs?

Accepted Answer

50 yards

Answer

26.5 yards

Answer

10 yards

Answer

46.7 yards

Question 35

Seth made a small rectangular table for his workroom.  The sides of the table are 36" and 18".  If the diagonal of the table measures 43", is the table square?  A table which is "square" has right angles at the corners.

Accepted Answer

No

Answer

Yes

Question 36

What is the formula used to solve for the hypotenuse?

Accepted Answer

a²⁺b²=c²

Answer

a+b=c

Answer

a-b=c

Answer

c-a=c

Question 37

_{^{Find the missing side}}

Accepted Answer

17.66

Answer

37

Answer

6

Answer

312

Question 38

Which set of measurements could be the side lengths of a right triangle?

Accepted Answer

20 cm, 21 cm, 29 cm

Answer

10 cm, 12 cm, 16 cm

Answer

30 cm, 32 cm, 42 cm

Answer

40 cm, 42 cm, 56 cm

Question 39

What is the solution to this system?
y = 2x + 1
y = 4x - 1

Accepted Answer

(1,3)

Answer

(-1,-3)

Answer

(-1,3)

Answer

(3,1)

Question 40

Find the slope of the line.

Accepted Answer

-1

Answer

-2

Answer

2

Answer

1

Question 41

Erin is 3 years younger than twice Alex's age. Their ages combined are 33 years. How old are Alex and Erin. If x=Erin's age and y=Alex's age, choose the system that matches the situation.

Accepted Answer

x + y = 33
x = 2y - 3

Answer

x + y = 33
y = 2x - 3

Answer

x + y = 33
x = 3 - 2y

Answer

x + y = 3
x = 33 - 2y

Question 42

If a system of equations has no solution, what does the graph look like?

Accepted Answer

parallel lines

Answer

intersecting lines

Answer

skew lines

Answer

intersecting lines

Question 43

Does the system have one, none or infinite solutions?
8x + 4y = 12
y = -2x + 3

Accepted Answer

Infinitely many solutions

Answer

(0,3)

Answer

(3,0)

Answer

No solution(parallel lines)

Question 44

What is the solution to the system?

Accepted Answer

(1, 3)

Answer

(0, 3)

Answer

(1, -1)

Answer

(-3, 1)

Question 45

Solve the following system by setting the two equations equal to each other. What is the solution?
HINT: - 1/3x + 4 = 2/3x + 1 and then solve for x. Once you find x go back and find y.

Accepted Answer

(3, 3)

Answer

Infinite number of solutions

Answer

(3, -3)

Answer

(-3, 3)

Question 46

Solve this system of equations by graphing.

y = 1/2x + 2

y = -3x + 9

Accepted Answer

(2, 3)

Answer

(-2, -3)

Answer

(3, 2)

Answer

(-3, 2)

Question 47

What is the solution?

Accepted Answer

No solution

Answer

(0, 2)

Answer

(0, -4)

Answer

(3, -3)

Question 48

At what rate did the rain fall?

Accepted Answer

2 cm per hour

Answer

¹/₄ cm per hour

Answer

¹/₂ cm per hour

Answer

4 cm per hour

Question 49

What is the rate of change?

Accepted Answer

5

Answer

50

Answer

10

Answer

14

Question 50

Solve: 5x + 34 = -2(-7x + 1)

Accepted Answer

4

Answer

-4

Answer

9

Answer

36/19

Question 51

Find the slope of the line that passes through (10, -8) and (1, 12).

Accepted Answer

-20/9

Answer

20/9

Answer

4/9

Answer

9/4

Question 52

What does 'b" represent in y=mx=b

Accepted Answer

y-intercept

Answer

macaroni

Answer

nothing

Answer

slope

Question 53

What is the equation of this line?

Accepted Answer

y = -x + 2

Answer

y = 2x +2

Answer

y = 2x -2

Answer

Cannot be Determined

Question 54

find the slope

Accepted Answer

3/2

Answer

-3/2

Answer

(-0,-3)

Answer

none of the above

Question 55

Write the equation of the line.

Accepted Answer

y = 1/3x - 2

Answer

y = -1/3x - 2

Answer

y = 3x - 2

Answer

y = -3x - 2

Question 56

How would you write the equation with a slope of 2/3 and a y-intercept of -3

Accepted Answer

y=2/3x-3

Answer

y=3/2x+3

Answer

y=2/3-3

Answer

y=2/3x+3

Question 57

Write the equation of the line.

Accepted Answer

y = 1/3x - 2

Answer

y = -1/3x - 2

Answer

y = 3x - 2

Answer

y = -3x - 2

Question 58

What does "m" represent in y=mx+b?

Accepted Answer

slope

Answer

y-intercept

Answer

macaroni

Answer

nothing

Question 59

Write the equation for the line in slope-intercept form.

Accepted Answer

y= 4x+3

Answer

y= -1x+3

Answer

y=1/4x+3

Answer

y= -4x+3

Question 60

Which is the graph of y=-x+2?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 61

Which is the graph of y=-x+2?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 62

Which is the graph of y= -x + 2?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

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