PSLE结束已经有一段时间，作为一名准中学生，如何趁这两个多月的假期为中学做好准备？
中学数学，认识的数系扩充，我们要认识负数、有理数、实数。从而带来的问题是计算复杂程度大大加深。很多同学面临计算算不好的问题，也将严重影响后续代数的学习。
这就是大家中学面临的第一个挑战，也是进入Sec1，term1的考试里一定会考的。
实际情况是到了考试的时候这种计算，仍然有很多同学算不对，为了帮助大家顺利衔接中学课程，在中一取得领先优势，我们给大家准备了“有理数计算420题”。同时为了引导大家开始练习，帮助大家解决前期计算可能出现的问题，我们在10月10日到14日举办了为期四天的计算打卡。本次打卡结束后，大家可以着手开始“420题”的练习。本帖帮大家总结了涉及负数的计算方法如下：
1. Absolutevalue：a number is made up of an absolute value with a positive or negative sign infront of it.
2. Rules for adding two numbers: Case1: Bothnumbers have the same signs: Remaining their common sign and adding the absolutevalue of numbers. Case2: Bothnumbers have different signs: Using the same sign as the number having the largerabsolute value and subtracting the absolute values. 3. Rules for subtracting two numbers: Tosubtract integers, change the sign of the integer being subtracted and addusing the addition rules for integers. 4. Rules for multiplication and division: Case1: Both numbers have the same signs: Theproduct or quotient is positive. Case2: Both numbers have different signs: Theproduct is negative. 5. Rules for division: Dividingby a number is equivalent to multiplying its reciprocal.
希望大家都能利用这个假期，将计算问题彻底解决。如果有任何问题可以随时与我们联系。
Daily Practice- Day1.pdf
(53.56 KB, 下载次数: 170)
Daily Practice- Day2.pdf
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Daily Practice- Day3.pdf
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Daily Practice- Day4.pdf
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发表于 2023-10-15 18:46:29
