问题 解答题

脱式计算.

627+4650÷75×18

(960-3200÷16)×23

3200÷(1280-72×15)

300-300÷15×6.

答案

(1)627+4650÷75×18,

=627+62×18,

=627+1116,

=1743;

(2)(960-3200÷16)×23,

=(960-200)×23,

=760×23,

=17480;

(3)3200÷(1280-72×15),

=3200÷(1280-1080),

=3200÷200,

=16;

(4)300-300÷15×6,

=300-20×6,

=300-120,

=180.

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