作业帮102×98 = = = = = = = = 简便运算!
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/08 17:32:06
102×98 = = = = = = = = 简便运算!
102×98 = = = = = = = = 简便运算!
102×98 = = = = = = = = 简便运算!
102×98
=(100+2)×98
=100×98+2×98
=9800+196
=9996
(100+2)*(100-2) = 100^2-2^2 = 10000-4 = 9996
102×98 =（100+2）*（100-2）=100*100-2*2=10000-4=9996