For straightforward calculation problems, it is a bit difficult to look at the picture. It is important to understand the meaning of the picture when doing the problem. Let the children observe carefully, interpret with mathematical eyes, and express what mathematical information is reflected in the chart in their own words, and then carefully calculate and check.
Primary school mathematics is to teach children a series of knowledge about number, four operations, the calculation formula of figure and length, unit conversion and so on through textbooks, which lays a good mathematical foundation for junior high school and daily life calculation.