脱式计算,能简算的就简算.712÷[34?(1120?12)]3834?15.38+61.25?4.6218×5.65+3.35×18+18
脱式计算,能简算的就简算.712÷[34?(1120?12)]3834?15.38+61.25?4.6218×5.65+3.35×18+18125×83-25×15....
脱式计算,能简算的就简算.712÷[34?(1120?12)]3834?15.38+61.25?4.6218×5.65+3.35×18+18125×83-25×15.
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天命9t渨L
推荐于2016-10-24
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(1)
÷[?(?)],
=
÷[?],
=
÷
,
=
;
(2)
38?15.38+61.25?4.62,
=(38
+61.25)-(15.38+4.62),
=100-20,
=80;
(3)
×5.65+3.35×+,
=
×(5.65+3.35+1),
=
×10,
=
;
(4)125×83-25×15,
=(25×5)×83-25×15,
=25×415-25×15,
=25×(415-15),
=25×400,
=10000.
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