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  • 2022年初中数学:实数的概念及运算当堂检测题

    2022-08-24

    '); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})();...

  • 2022年初中数学:实数比较大小的具体方法

    2022-08-24

    '); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 实数比较大小的具体方法: (1)求差法: 设a,b为任意两个实数,先求出a与b的差,再根...

  • 2022年初中数学:实数与数轴

    2022-08-24

    '); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 实数与数轴 1、数轴:规定了原点、正方向、单位长度的直线称为数轴。原点、正方向、...

  • 2022年初中数学:实数的倒数、相反数和绝对值

    2022-08-24

    '); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 实数的倒数、相反数和绝对值 1、相反数 实数与它的相反数时一对数(只有符号不同的两...

  • 2022年初中数学:实数的运算顺序

    2022-08-24

    '); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 实数的运算顺序: 乘方、开方为三级运算,乘、除为二级运算,加、减是一级运算,如...

  • 2022年初中数学:实数运算顺序

    2022-08-24

    '); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 实数的运算顺序: 乘方、开方为三级运算,乘、除为二级运算,加、减是一级运算,如...

  • 2022年初中数学:代数式课前练习

    2022-08-24

    '); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})();...

  • 2022初中考数学:实数与数轴上点的关系

    2022-08-24

    '); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 实数与数轴上的点就是一一对应的,即每一个实数都可以用数轴上的一个点来表示;反过...

  • 2022年初中数学:求差比较实数大小

    2022-08-24

    '); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 求差比较实数大小 设a、b是实数, ① a-b0 ---- ab ② a-b=0 ---- a=b ③ a-b0 ---- a...

  • 2022年初中数学:实数课后练习题一

    2022-08-24

    '); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})();...