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脱式计算.727+114+186=456-278-132=368-(168+122)=278-199+680=

题目详情
脱式计算.
727+114+186=
456-278-132=
368-(168+122)=
278-199+680=
▼优质解答
答案和解析
(1)727+114+186
=727+(114+186)
=727+300
=1027

(2)456-278-132
=456-(278+132)
=456-410
=46

(3)368-(168+122)
=368-168-122
=200-122
=78

(4)278-199+680
=79+680
=759