问题 解答题
脱式计算.
(125-225÷5)×2378-78÷13×5270÷30-180÷3042+6×(12-4)
答案

(1)(125-225÷5)×23,

=(125-45)×23,

=80×23,

=1840;

(2)78-78÷13×5,

=78-6×5,

=78-30,

=48;

(3)270÷30-180÷30,

=9-6,

=3;

(4)42+6×(12-4),

=42+6×8,

=42+48,

=90.

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