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1、1练习1. 将以下信息表达为数学式子1-1. Y= X+501-2. A = 2/3 B1-3. X = 2B.1-4. Jack is now 14 years older than Bill. If in 10 years Jack will be twice as old as Bill, how old will Jack be in 5 years?A. 9 B. 19 C. 21 D. 23 E. 331-5.D2. C. 20%3. B4. 185. 一样大6. C7.D.8. C 9. A. 5210. B11. 一群鹅，用来做移民（Immigration ）试验，30%是公的
2、，在移民的鹅中 20%是公的，问：公鹅的迁徙率比母鹅的迁徙率是多少？12. 50%13. 8 个14. B 15. 11216-1. 19 16-2. 33 16-3. 14 17. A18. B219. E20. B21.Note: The figure is not drawn to scale.A rectangular picture is surrounded by a boarder, as shown in the figure above. Without the boarder the length of the picture is twice its width. If
3、the area of the boarder is 196 square inches, what is the length, in inches, of the picture, excluding the boarder?A. 10 B. 15 C. 30 D. 40 E. 60 22. D 23. B24. C5,3 * P3,3？25. 3*3*3*326. 正向解题：C4,3 + C4,2*C5,1+C4,1*C5,2逆向思维：C9,3 C5,3 27. C5,2*C10,228D29. 3/830. P4,4 31. 1.一个人扔飞镖，击中靶心的概率是 0.7， 这个人连续扔了
4、 4 次飞镖，其中有 2 次扔中靶心的概率是多少？ 32. .A33.3/834.A；335. B. 0.1236. E. 9%37. Cars X and Y were traveling together on a straight road at a constant speed of 55 miles per hour when car X stopped for 5 minutes. If car Y continued to travel at 55 miles per hour, how many minutes from the time that car X resumed
5、traveling did it take car X traveling at 60 miles per hour to catch up with car Y ? (Assume that the time for car X to slow down and speed up was negligible.A. 5 B. 30 C. 45 D. 55 E. 6038. If Art and Rita can do a job in 4 hours when working together at their respective constant rates and Art can do
6、 the job alone in 6 hours, in how many hours can Rita do the job alone?39. If A can do a job in 20 days and B can do the job in 30 days, they work together to do this job and in this period, A stop work for 2.5 days and B stop work for x days, and the job be finished for 14 days, what is x?40. If x(
7、2x+1)=0 and (x+ )(2x-3)=0, then x=21A. -3 B. - C. 0 D. E. 2134附录一 GMAT 数学词汇表integer 整数factor 因子divisor 因子,除数multiple 倍数，成倍，乘divisible 可被整除的reminder 余数quotient 商odd integers 奇数even integers 偶数prime number 质数composite number 合数perfect square number 完全平方数perfect cube number 完全立方数the greatest common div
8、isor 最大公约数the least common multiple 最小公倍数the nth power of x：X nthe nth root of X: nXsquare root 平方根cube root 立方根fraction 分数，numerator 分子denominator 分母mixed number 繁分数improper fraction 假分数proper fraction 真分数thousands 千位hundreds 百位tens 十位units = ones 个位decimal point = point = period 小数点tenths 十分位hundr
9、edths 百分位thousandths 千分位to the nearest 四舍五入 decimal notation 十进制计数scientific notation 科学计数法terminating decimal 有限小数mean 算术平均数median 中数mode 众数range 值域standard deviation 标准差element 元素subset 子集union 并集disjoint or mutually exclusive 没有交集intersection 交集 coefficient 系数 constant term 常数项 polynomial 多项式 qua
10、dratic = second degree 二次的 solution = root 方程的解 exponents 幂，指数sequence = progressiongeometric sequence 等比数列arithmetic sequence 等差数列function 函数 coordinate system = x y-planequadrant 象限 x coordinate x 轴坐标horizontal line = x axis x 轴 y coordinate y 轴坐标perpendicular line = y axis y 轴 slope 斜率intercept 截
11、距：x intercept；y interceptintersect 相交 vertical 对顶角 straight angel 平角 acute angel 锐角 obtuse angel 钝角 right angel 直角 parallel lines 平行线side 边 vertices顶点 triangle 三角形 quadrilateral 四边形 pentagon 五边形 hexagon 六边形 regular polygon正多边形 hypotenuse斜边area of a triangle 三角形的面积 5leg 直角边 altitude 高 base 底 equilate
12、ral triangle 等边三角形 isosceles triangle 等腰三角形diagonal 对角线 rectangle 长方形 square 正方形 trapezoid 梯形 rhombus 菱形 parallelogram 平行四边形chord 弦 diameter 直径 circumference 周长 radius 半径 arc 弧 point of tangency 切点 inscribed 内接的 circumscribed 外切的 rectangular solid 长方体 cube 立方体 face = surface 面 edge 边 vertex 顶点dimension 1. 维， 3-D；2. 图形的尺寸volume 体积combination 组合permutation 排列principal 本金simple ( annual interest) rate 单的年利率compounded rate 复利semiannual rate 半年率 down payment 首付concentration 浓度
