de thi olympic tieng anh lop 8 vong 2 nam hoc 2013 2014 tài liệu, giáo án, bài giảng , luận văn, luận án, đồ án, bài tập...
VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí Đề thi Olympic Tiếng Anh lớp vòng năm học 2013 - 2014 Đề thi số Choose the best answer for the following questions (2 points per question) Câu The length of a rectangle is increased by 25%, but the width of the rectangle is adjusted to keep the area of the rectangle unchanged By what percent was the rectangle’s width adjusted? A 20 percent B 22 percent C 24 percent D 26 percent Câu Look at the graph above What is the equation of the line on the graph? A y = B y = 4x C y = x - D y = x + 200x + 150 ≥ 700 Câu There is $150 in Dave’s bank account He deposits $200 into the account each month Dave needs at least $700 to buy a used car The inequality above can be solved for x to find the number of deposits Dave must make to reach his goal What is the minimum number of deposits that Dave needs to make in order to buy a used car? A B C D VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí Câu The box-and-whisker plot above shows the amount of time students at East Junior High School study each week What percent of the students study at least 10 hours each week? A 10% B 25% C 50% D 75% 2, 5, 2, 5, 1, 6, 4, 7, 1, 6, 3, Câu The ages of Sasha’s cousins are listed above What is the median age of Sasha’s cousins? A B 5.5 C 4.5 D Câu Carina downloaded songs to her new portable music player each day for five days The line graph above shows the total number of songs Carina had on her music player at the end of each day On which day did she add the most songs? A Tuesday B Wednesday C Thursday D Friday VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí Câu A trip between two cities on a standard train takes hours On a high-speed train, the time for the same trip is reduced by 62.5% How many hours does the trip on the high-speed train take? A 1.5 hours B 2.5 hours C 3.375 hours D 3.625 hours Câu In the diagram above, the front of the tent forms an isosceles triangle What is the area of the triangle? A 24 square feet B 26 square feet C 34 square feet D 48 square feet Câu A circle is inscribed inside of a square, where the circle touches all four sides of the square, as shown above Jan wants to calculate the ratio of the area of the square to the area of the circle She knows that the area of the circle = πr2 She determines that the ratio = 4: π Why is that the case? A A side of the square = the radius Thus, the area of the square = r2 B A side of the square = times the radius Thus, the area of the square = 4r2 C A side of the square = times the radius Thus, the area of the square = 16r2 D A side of the square = 1/2 the radius Thus, the area of the square = 1/4r2 VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí Câu 10 In the triangle above, what is the measure of angle R? A 72° B 82° C 98° D 108° VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí Đề thi số Choose the best answer for the following questions (2 points per question) Câu Which of the following would transform quadrilateral ABCD to quadrilateral A′B′C′D′? A a reflection across the y-axis and a reflection across the x-axis B a reflection across the y-axis and a slide down units C a reflection across the x-axis and a slide up units D a slide down units and a slide right units Câu Look at the table above Which student group has the least number of members in 8th grade? A honor society B jazz band C chess club D recycling club Câu There were women, 14 men, and 21 children on a bus One person signaled the driver to stop What is the probability that the person who signaled was a woman? VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí A 1/40 B 1/8 C 1/7 D 1/5 Câu Kari, Myrna, Nate, and Walt were standing in the lunch line How many different ways could they be arranged in the lunch line? A B C 16 D 24 Câu In the diagram above, lines m and n are parallel Which angles are congruent to ∠1? A ∠2, ∠3, and ∠8 B ∠5, ∠2, and ∠3 C ∠6, ∠7, and ∠4 D ∠6, ∠3, and ∠8 Câu What is the total number of degrees of the interior angles of this polygon? A 64° B 360° C 900° D 1,080° Câu The base of a circular pool has a radius of feet What is the approximate area of the base of the pool? (Use 3.14 for π.) A 88.74 square feet B 37.78 square feet C 28.26 square feet D 18.84 square feet VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí Ian’s pattern: 1, 4, 16, 64 Lauren’s pattern: –2, –8, Câu Ian and Lauren are each making patterns that follow the same rule What is the next number in Lauren’s pattern? A –14 B –16 C –24 D –32 Câu This table above shows the cost of renting a kayak The cost of renting a kayak is represented by the equation y = 8x + 5, where x represents the number of hours What does the slope of the equation represent? A The total cost for the rental B The cost of renting a kayak for hours C The cost of renting a kayak for hours D The cost increase for each hour of rental The oven takes 10 minutes to warm up before the first tray of muffins can be baked Each tray of muffins takes 20 minutes to bake Câu 10 Tessa bakes muffins in an oven Which table shows the relationship between the number of trays of muffins Tessa bakes and the total oven time? VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí A B C D ... π.) A 88 .74 square feet B 37. 78 square feet C 28 . 26 square feet D 18. 84 square feet VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí Ian’s pattern: 1, 4, 16, 64 Lauren’s pattern: 2, 8, ... to ∠1? A 2, ∠3, and 8 B ∠5, 2, and ∠3 C ∠6, ∠7, and ∠4 D ∠6, ∠3, and 8 Câu What is the total number of degrees of the interior angles of this polygon? A 64° B 360° C 900° D 1, 080 ° Câu The... the measure of angle R? A 72 B 82 ° C 98 D 1 08 VnDoc - Tải tài liệu, văn pháp luật, biểu mẫu miễn phí Đề thi số Choose the best answer for the following questions (2 points per question) Câu