问题 解答题

计算

724-105×4

(976-955)÷3

(4802-4466-280)÷7.

答案

724-105×4,

=724-420,

=304;

(976-955)÷3,

=21÷3,

=7;

(4802-4466-280)÷7,

=(336-280)÷7,

=56÷7,

=8.

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