题目内容
计算竞技场.
640-700÷5
642÷6+145
(813-288)÷5
(375+225)÷4.
640-700÷5
642÷6+145
(813-288)÷5
(375+225)÷4.
(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.
=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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