599999+49999+3999+299+19简便计算?

2025-08-16 21:35:01
推荐回答(3个)
回答1:

简便计算过程如下:
599999+49999+3999+299+19
=(600000-1)+(50000-1)+(4000-1)+(300-1)+(20-1)
=600000+50000+4000+300+20-(1+1+1+1+1)
=654320-5
=654315

回答2:

(599999+1)+(49999+1)+(3999+1)+(299+1)+(19+1)-5

回答3:

原式=600000-1+50000-1+4000-1+300-1+20-1
=654320-5
=654315