de thi olympic tieng anh lop 10 vong 3 nam hoc 2013 2014

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Đề thi Olympic Tiếng Anh lớp 10 vòng 3 năm học 2013 - 2014
Đề thi số 1

Câu 1. Use the scale drawing above to estimate. What's the diameter of the hole in the
center of the drawing?
A. 8 inches

B. 12 inches

C. 1/2 inches

D. 1/8 inches

E. 4 inches
Câu 2. The area of a rectangular field is represented by (2k2 + 27k + 70) feet, and the
width of the field is represented by (k + 10) feet. Which expression represents the length,
in feet, of the rectangular field?
A. k + 60

B. 2k + 70

C. 2k2 + 26k + 60

D. 2k2 - 26k - 60

E. 2k + 7


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Câu 3. The scatter plot above shows data from an experiment that tested the amount of
lactic acid present in aging cheese. Which best describes the relationship between the age
of the cheese and the amount of lactic acid present in the cheese, as shown in the scatter
plot?
A. There is no correlation.
B. There is a positive correlation.
C. There is a negative correlation.
D. There is a non-linear correlation.
E. None of them
Câu 4. Which of the following is equivalent to (2x2y + xy + 2xy2)/xy?
A. 4
B. 3xy + 2x
C. 2x + 1 + 2y
D. 2x3y2 + x2y2 + 2x2y3
E. None of them
Câu 5. Factor: 9x2 - 9
A. 9(x - 1)
B. 9(x - 1)2
C. 3(x + 3)(3x - 1)
D. 9(x + 1)(x - 1)
E. 9(x + 1)2(x - 1)2
Câu 6. Which of these pairs of equations describes lines that are perpendicular?
A. y = -4/5x - 3 and y = -5/4x + 3
B. y = 2/7x - 3 and -7/2x - 4
C. y = 3x + 9 and y = 3x - 15
D. y = 5/2x - 4 and y = 2/5x + 2
E. None of them
Câu 7. Which of these graphs represents a function?

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A.

B.

C.

D.

E. None of them
Câu 8. Which of the following is equivalent to the expression: (6b + 5c – 9) – 4(2b – c –
1)?
A. –2b + c – 13
B. –2b + 9c – 5
C. 4b + 9c – 10
D. 4b + 6c – 8
E. 4b + 6c + 8
4x + 3y = 5
-3x - 6y = 0
Câu 9. What is the solution of the system of linear equations above?
A. (-1, 2)

B. (1, -2)

C. (2, 1)

D. (1, 2)

E. (2, -1)

Câu 10. Solve: 3k - 7(k + 5) - 5 < 0
A. k < - 10

B. k > - 10

C. k < 0

D. k > 0

E. None of them


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Đề thi số 2

Câu 1. What is the area of the triangle shown in the diagram above?
A. 192 square inches
B. 384 square inches
C. 154 square inches
D. 48 square inches
E. 96 square inches

Câu 2. What is the equation of the line shown in the graph above?
A. y = 2x + 2

B. y = -1/2x + 2

C. y = -2x + 2

D. y = 1/2x + 2

E. y = x + 2
Câu 3. Which of these graphs represents the solution of x - 4 > 1 or 2x + 2 ≤ -6?


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A.
B.
C.
D.
E. None of them

Câu 4. Which of these inequalities describes this graph?
A. -5 < x < 1

B. -5 < x ≤ 1

C. -5 ≤ x ≤ 1

D. -5 ≤ x < 1

E. None of them

Câu 5. What is the value of x ?
A. 40º

B. 45º

C. 60º

D. 80º

E. 100º


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Câu 6. What is the value of x in the right triangle above?
A. 6

B. √6

C. 3√34

D. 9

E. 12

Câu 7. Which of these dimensions form a rectangle similar to a rectangle with a width of
2 inches and a length of 5 inches?
A. 2 inches by 10 inches
B. 4 inches by 25 inches
C. 6 inches by 9 inches
D. 6 inches by 15 inches
E. 6 inches by 20 inches
Câu 8. A box has a volume of 2880 cubic inches, a height of 20 inches, and a square base.

What is the length of a side of the base?
A. 12 inches

B. 24 inches

C. 48 inches

D. 96 inches

E. 144 inches

Câu 9. Seven students in gym class shot 20 free throws each. The number of free throws
made successfully is shown in the table above. What is the median number of free throws
made successfully?
A. 12

B. 13

C. 14

D. 15

E. 16

Câu 10. A committee consists of 6 students and 4 teachers. If two committee members
are selected at random, what is the probability that the first member selected is a student
and the second member is a teacher?
A. 1/5

B. 4/15

C. 1/24

D. 6/25

E. 1/2


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Đề thi số 3
Câu 1. At a fancy vegetable stand, Jim bought purple tomatoes for $8 each and Aubrey
bought organic giant cabbages for $12 each. In total, they paid $104 for 10 vegetables.
How many cabbages did Aubrey buy?
A. Four

B. Five

C. Six

D. Seven

E. Eight

Câu 2. What is the apparent solution to the system of equations graphed above?
A. (-2, -2)

B. (-2, 2)

C. (2, -2)

D. No solution

E. (2, 0)

Câu 3. Joe has $20.00. A six-pack of soda costs $1.89, including tax. What is the greatest
number of six-packs of soda he can buy?
A. 5

B. 10

C. 15

D. 20

E. 25

Câu 4. Determine the slope m, x-intercept, and y-intercept of the equation 5x – 2y = 10.
A. slope m = 2.5, x-intercept = (2, 0), and y-intercept = (0, -5)
B. slope m = -2.5, x-intercept = (2, 0), and y-intercept = (0, -5)
C. slope m = 0.4, x-intercept = (-5, 0), and y-intercept = (0, 2)
D. slope m = -0.4, x-intercept = (-5, 0), and y-intercept = (0, 2)
E. slope m = 2, x-intercept = (-2, 0), and y-intercept = (0, -5)
Câu 5. What is the ratio of the area of a circle with radius r to the circumference of the
circle?
A. r/2

B. π/2

C. 2/r

D. 2/π

E. r2/2


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The

first

The

second

term
term

is

2.

is

7.

Each term after the second is found by adding 5 to
the immediately preceding term.
Câu 6. A pattern is described above. What is the fifth term in the pattern?

A. 5

B. 12

C. 17

D. 22

E. 25

Câu 7. Which of the following must be true for △QRS?
A. QR + RS = QS
D. QR = RS

B. QR + QS < RS

C. QS + RS > QR

E. RS = QS

Câu 8. The math club sold candy bars as a fundraiser. The number of candy bars sold by
each member is shown above. Which frequency chart accurately represents the data?

A.

B.

C.

D.

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E. None of them
Câu 9. If x = 4 and y = -1, what’s the value of the expression √ 2x - 8y ?
A. 0

B. √5

C. √14

D. 4

E. 22

Câu 10. Evaluate: 3 – 33 + 7 × 3.
A. 1

B. 2

C. 3

D. 4

E. -3

Đề thi số 4
2x − 5y = −11
4x + 15y = 3

Câu 1. What is the x-value of the solution to this system of equations?
A. 3

B. 2

C. -1

D. -3

E. -5

Câu 2. The graph represents the total cost in dollars, y, to rent a car and drive x miles.
Which equation describes this graph?
A. y = x/10 + 15

B. y = x/15 + 10

D. y = 15x + 10

E. y = 25x + 10

C. y = 10x + 15

Câu 3. Which graph shows the solution to the inequality 2x − 3y < −6?


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A.

B.

C.

D.

E. None of them
Câu 4. Jasmine and Nina have documents printed at a copy store. Each page that is
printed costs the same. Jasmine spends $20 to have a 250-page document printed. How
much will it cost Nina to have a 150-page document printed?
A. $10

B. $12

C. $15

D. $16

E. $18

Câu 5. The land area of the continent of Asia is approximately 44 million square
kilometers. Which expression shows 44 million written in scientific notation?
A. 44×106

B. 44×107

C. 4.4×106

D. 4.4×107

E. 44×102

Câu 6. Violet walked 2/3 of the way around a lake. She walked 5/2 miles. What is the total
distance around the lake?
A.

15

/4 miles

B.

19

/6 miles

C.

11

/4 miles

Câu 7. Which expression has the same value as 5-3?

D. 5/3 miles

E. 1/3miles

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A. 1/5•3

B. 5•(−3)

C. 1/5•5•5

D. -5•-5•-5

Câu 8. Evaluate: 4 + 2(2 – 5)2 – 1.
A. 25

B. 24

C. 23

D. 22

E. 21

Câu 9. What is the value of ab2 when a = 3 and b = 4?
A. 44

B. 45

C. 46

D. 47

E. 48

Câu 10. Which expression is equivalent to 5 − 3x(2x − 4)?
A. 4x2 − 8x

B. 4x2 + 8x

D. −6x2 - 12x + 5

E. 6x2 + 12x + 5

C. −6x2 + 12x + 5

E. 1/3