Question

158x98十365x98简便计算

Answer 1

158×98+365×98＝（158+365）×98＝523×（100-2）＝52300-1046＝51254

Answer 2

158x98十365x98

=98×(158+365)

=98×523

=98×500+98×23

=100×500-2×500+100×23-2×23

=50000-1000+2300-46

=50000+1300-46

=50000+1254

=51254

知识是无尽的食粮。