数学老师经常用画图的方法来帮助大家分析数学问题,因为这样做不但便于同学们理解题中的数量关系,而且还常常能从图中直接得到答案。比如:【例1】河南小学组织四、五、六年级的同学去参观博物馆,共去了910人。已知六年级比五年级多去了30人,四年级比五年级少去了20人。四、五、六年级各去了多少人?【思路点睛】根据题意,画出线段图,从线段图中寻找解题的思路。 Math teachers often use the method of drawing to help you analyze math problems, because doing so not only helps students to understand the quantitative relationship between questions, but also often get the answers directly from the diagram. For example: [Example 1] Henan primary school organized four, five, six grade students to visit the museum, a total of 910 people. It is known that there are 30 more people in the sixth grade than in the fifth grade, and 20 fewer people in the fourth grade than in the fifth grade. Fourth, fifth and sixth grade each go to how many people? [Ideas dot eye] According to the inscription, draw line drawings, find the line from the idea of ​​solving problems.