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用方程解四则应用题是学生运用学过的知识解决实际问题的练习,是理论与实陈的结合.其重要性是很明显的.中学生作这种练习开始于用一元一次方程解四则应用问题,本文主要就一元一次的方程来讨论.应用题中两个数量的关系,都应该能用等式来表示.例如说甲比乙大 a 个单位则表以甲-乙=a 或乙+a=甲,例如说甲为乙的n 倍则表以甲=n 乙或乙=甲/n.方程不过
Solving four problems using equations is an exercise in which students apply learned knowledge to solve practical problems. It is a combination of theory and practice. Its importance is very obvious. The middle school students make this kind of exercise begins with solving the four application problems with a one-dimensional equation. This article mainly discusses the equation of one yuan at a time. The relationship between two numbers in an application should be expressed by an equation. For example, if A is greater than A, then the table is A-B=a or B+a. A. For example, if A is equal to B, then the table is expressed as A=n B or B=A/n.