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《义务教育数学课程标准(2011年版)》在“数与代数”课程内容中新增了发展学生运算能力的要求“。运算能力”主要是指能根据法则和运算定律正确地进行运算的能力。对运算能力的培养有助于学生理解运算的算理,更好地寻求合理、简洁的运算途径解决问题。从小学中年级段开始简便计算就逐渐出现在了学生的视野中,从四年级下第三单元
“Compulsory Education Mathematics Curriculum Standard (2011 Edition)” in the “number and algebra” course content to increase the requirements of students’ computing ability “computing power ” mainly refers to the law can be carried out according to law and law The ability to operate. The training of computing power will help students understand the arithmetic of computing and better seek reasonable and concise computing ways to solve the problem. Beginning from the middle school grade simple calculation began to gradually appear in the student’s field of vision, from the fourth grade under the third unit