问题 解答题

计算竞技场.

640-700÷5

642÷6+145

(813-288)÷5

(375+225)÷4.

答案

(1)640-700÷5,

=640-140,

=500;

(2)642÷6+145,

=107+145,

=252;

(3)(813-288)÷5,

=525÷5,

=105;

(4)(375+225)÷4,

=600÷4,

=150.

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