题目内容
脱式计算.
92.3-(84.54-45.65)
450+50×(96÷12)
780-80×3+27.
92.3-(84.54-45.65)
450+50×(96÷12)
780-80×3+27.
(1)92.3-(84.54-45.65)
=92.3-38.89
=53.41;
(2)450+50×(96÷12)
=450+50×8
=450+400
=850;
(3)780-80×3+27
=780-240+27
=540+27
=567.
=92.3-38.89
=53.41;
(2)450+50×(96÷12)
=450+50×8
=450+400
=850;
(3)780-80×3+27
=780-240+27
=540+27
=567.
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