word word 1 / 12 word word word 2 / 12 word word word 3 / 12 word word word 4 / 12 word 第一章算术 Arithmetic word word 5 / 12 word 分数、小数和百分比 fractions, decimals and percent 分子 numerator part 分母denominator whole(the base of the percent) Triangle inequality: |a+b|<=|a|+|b| word word 6 / 12 word 错题: n=a^x×b^y×c^z a b c为质数 n的positive factors有(x+1)(y+1)(z+1)个 87是合数!! 二三章 Algebra 代数 遇到real integer一定一定要小心!!! 0的算术平方根仍为零。 化简根式simplifying radicals。 word word 7 / 12 word Coefficient 系数 constant 常数 estate 遗产 Functions 函数 自变量independent variable The terms 5z2 and -z2 are called like terms 20y2 + 6y -17 = 0 A quadratic equation in one variable, y (x,y): ordered pair simultaneous equations Simultaneous equations 联立 quadratic equation 二次方程 The domain of a function is the set of all permissible inputs. word word 12 / 12 word dimes 10分硬币 quarters 25分硬币 word word 12 / 12 word 12周 3 word word 10 / 12 word rebate 会扣 times as many apples as pears! word word 12 / 12 word 第四章集合 排列组合 概率 Intersection交集 progressions 级数 word word 12 / 12 word 错题: median!!中位数!! 第五章 geometry 几何 word word 13 / 12 word