问题 解答题

计算下面各题.

43-12×3

50×3÷2

(38+282)÷4

180÷9-18.

答案

(1)43-12×3

=43-36

=7;

(2)50×3÷2

=150÷2

=75;

(3)(38+282)÷4

=320÷4

=80;

(4)180÷9-18

=20-18

=2.

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