简便算375+178+21+125+74怎样简便算

简便算375+178+21+125+74怎样简便算
2025-04-30 09:37:36
推荐回答(4个)
回答1:

375+178+21+125+74
=(375+125)+(178+22)-1+74
=500+200-1+74
=773

回答2:

375+178+21+125+74
=375+125+178+21+73+1
=500+200+73
=773

回答3:

=(375+125)+(178+21)+74
=500+199+74
=500+200+74-1
=773

回答4:

=(375+125)+(178+22-1)+74
=500+200-1+74
=773