138-(652-862)+599-48怎么巧算

2025-12-18 03:48:38
推荐回答(2个)
回答1:

138-(652-862)+599-48
=138-652+862+599-48
=(138+862+599)-(652+48)
=1599-700
=899

回答2:

138-(652-862)+599-48
=138-652+862+599-48
=(138+862)-(652+48)+599
=1000-700+599
=300+599
=899