巧用数形结合思想四例

• 作 者: 孙晋彩
• 机 构: 山东省枣庄市薛城区邹坞镇第一中学,
• 出 处: 数理天地(初中版)
• 发表日期: 2008年11期
• 关键词: 数形结合思想 甲车 一曰 题目要求 用五 甲乙 城下

例1一辆自行车有2个轮子,一辆三轮车有3个轮子.车棚里放着自行车和三轮车共10辆,车轮共有26个.问自行车和三轮车各几辆?分析结合实际,利用画图凑数法进行解答,很直观.(1)先画10个代表车身的简图:

Example 1 A bicycle has 2 wheels and a tricycle has 3 wheels. The bicycle shed has 10 bicycles and tricycles in total. There are 26 wheels. Ask each one of the bicycles and tricycles? The answer is very intuitive. (1) Draw 10 sketches representing the body: