简便运算是学生运算学习中的一个重点。人教版教材从四年级开始,学生系统地学习五条运算定律以及运用运算定律进行一些简便运算。学生经历了整数运算定律和运用运算定律进行整数简便运算到整数运算定律推广到小数、分数以及运用运算定律进行小数、分数的简算。最后,在六年级下册“整理与复习”中,系统地整理和复习运算定律及简便运算。可以说,学生用比较多的时间和精力去学习和掌握运算定律和简便运算。然而,不管在平时的学习中,还是期末检测中,简 Easy operation is a key point in student operation learning. PEP textbooks begin in the fourth grade. Students systematically study five arithmetic laws and use some computing laws to do some simple calculations. Students experience the law of integer arithmetic and the use of the law of arithmetic for integer simple to integer arithmetic law to the decimal, fraction and the use of arithmetic law decimal, fractional simple calculations. Finally, in the sixth grade under the book “finishing and review ” systematically collate and review the law of operation and simple operation. It can be said that students use more time and energy to learn and master the laws of computation and easy operation. However, no matter in normal learning, or the end of the test, Jane