第1课时方程综合应用重点考点解方程应用问题首先要学会读题,找出题目中的关键语句.有的关键语句直接给出了相等关系,可以直接译成文字等式,如“汽车的速度是拖拉机的2倍”.有些关键语句,如“20min后,通迅员……按原路追上队伍”等,并未直接点出相等关系,但它指明了事件发生的过程或操作过程.为了找到关键的等量关系,可以借助画图、列表等辅助分析手段. The first class hour comprehensive application of key points test solution equation application problems must first learn to read the questions to identify the key words in the title Some key phrases directly gives the equal relationship can be directly translated into text equations such as Speed ​​is 2 times the tractor. “Some key phrases, such as ” 20min, the communication staff ... ... follow the original team "and so on, did not directly point out the same relationship, but it pointed out the incident occurred Or operation process.In order to find the key equivalence relationship, you can draw a list, list and other auxiliary analysis tools.