73×21+79怎样简便计算

2025-03-12 20:42:14
推荐回答(2个)
回答1:

答:73×21+79
=73*20+73*1+79
=1460+73+79
=1460+152
=1612

回答2:

73*21+79
=73*(20+1)+73*1+6
=73*20+73*(1+1)+6
=1460+146+6
=1612