Đề thi Olympic Tiếng Anh lớp 11 vòng 26 năm 2013 - 2014

At the beginning of the month, Sue had a balance of $143 in her bank account. During the month, she made deposits of $325 and $172. She wrote checks for $62, $213, and $124. What was the new balance in her bank account at the end of the month?

Martina designed a painting for art class, as shown in the drawing above. Her design contains 4 circles on a square canvas. Each circle has a radius of 6 inches. The circles touch the edges of the canvas and each other, as shown above. The shaded section of Martina's design will be painted black. Which is closest to the area that will be painted black?

A quadratic function is given above. What is f(2)?

In a class of 60 students, 30% own a pet. How many students in the class own a pet?

The two identical rectangular doors of a barn have glass panes in the top half, and each bottom half is made of solid wood, as shown above. Which of the following measurements is closest to x, the length of the diagonal brace on the bottom half of each door?

Which point on the grid above satisfies the conditions x > −2 and y ≤ 3?

Julia walked 3.1 miles on Monday, 4.8 miles on Wednesday, and 3.9 miles on Friday. Which of the following is the best estimate of the total number of miles that Julia walked?

The distance between Town A and Town B is 213 miles. Ralph drove at an average speed of 58 miles per hour. Which of the following is a reasonable amount of time for Ralph to drive from Town A to Town B?

The net of a rectangular prism is shown above. What is the total surface area of the rectangular prism represented by this net?

The average distance between Earth and the Sun is about 149,000,000 kilometers. How is this number written in scientific notation?