1 1.2 有理数 ............................................................................................................................. 2 1.3 数轴 ................................................................................................................................. 4 1.4 绝对值 ............................................................................................................................. 8 1.5 有理数的大小比较 ....................................................................................................... 10 第二章 有理数的运算 ........................................................................................................... 11 2.1 有理数的加法 ............................................................................................................... 11 2.2 有理数的减法 ............................................................................................................... 12 2.3 有理数的乘法 ............................................................................................................... 15 2.4 有理数的除法 ............................................................................................................... 16 2.5 有理数的乘方 ............................................................................................................... 18 2.6 有理数的混合运算 ....................................................................................................... 26 2.7 准确数和近似数 ........................................................................................................... 29 第三章 实数 ........................................................................................................................... 31 3.1 平方根 ........................................................................................................................... 31 3.2 实数 .........................................................
