简算. 648-187-113 375-(175+94) 642-298 486+598
答案:1 悬赏:30
解决时间 2021-02-26 11:26
- 提问者网友:你在我眼中是最帅
- 2021-02-25 21:20
简算. 648-187-113 375-(175+94) 642-298 486+598.
最佳答案
- 二级知识专家网友:废途浑身病态
- 2021-02-25 22:58
(1)648-187-113
=648-(187+113)
=648-300
=348;
(2)375-(175+94)
=375-175-94
=200-94
=106;
(3)642-298
=642-(300-2)
=642-300+2
=342+2
=344;
(4)486+598
=486+600-2
=1086-2
=1084.
=648-(187+113)
=648-300
=348;
(2)375-(175+94)
=375-175-94
=200-94
=106;
(3)642-298
=642-(300-2)
=642-300+2
=342+2
=344;
(4)486+598
=486+600-2
=1086-2
=1084.
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