如何巧算这道题?

2024-12-27 09:50:37
推荐回答(2个)
回答1:

95300-35602+69973-25193+84700-24398-16548+87725+50027-14807+42275-13452
=(95300+84700)-(35602+24398)+(69973+50027)-(25193+14807)-(16548+13452)+(87725+42275)
=180000-60000+120000-40000-30000+130000
=(180000+120000)-(60000+40000)+(130000-30000)
=300000-100000+100000
=300000

回答2:

后面加起来能够凑整的配对
比如
95300 84700
-35602 -24398
+69973 +50027 等等