199998+29998+3998+498+58怎样简便

2025-03-29 02:36:14
推荐回答(3个)
回答1:

每个数字+2
200000+30000+4000+500+60=234560
一共加了5个2,所以234560=10=234550

回答2:

199998+29998+3998+498+58
=200000+30000+4000+500+60 -10
=200000+30000+4000+500+50
=234550

回答3:

200000-2+30000-2+4000-2+500-2+60-2 =234560-10 =234550