估算,指在计算、测量时无法也没有必要进行精确计算或测量,为了先大概地判断之后检验计算或测量结果的正确性,在精确计算或测量的前后所采取的计算方法,是对数量关系作出合理的或者大概的判断。然而学生估算能力的培养不是一朝一夕可以完成可以完成你的,需要一个长期的过程,学生估算能力的培养也不 Estimation, refers to the calculation, measurement can not and does not need to be precise calculation or measurement, in order to prejudice the calculation or measurement results after the test to determine the correctness of the exact calculation or measurement before and after the calculation method is the number of relations Make a reasonable or approximate judgment. However, the assessment of students ’ability to develop is not completed overnight can be completed, you need a long-term process, the assessment of students’ ability to develop nor