102×98 = = = = = = = = 简便运算!

来源：学生作业学帮网编辑：学帮网时间：2024/05/06 18:25:04

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