题目内容
先标出运算顺序,再计算下面各题.
(1)25+180÷30-10
(2)45-5×6÷2
(3)(320+120)÷(20-16)
(1)25+180÷30-10
(2)45-5×6÷2
(3)(320+120)÷(20-16)
(1)计算顺序如下:

25+180÷30-10
=25+6-10
=31-10
=21;
(2)计算顺序如下:

45-5×6÷2
=45-30÷2
=45-15
=30;
(3)计算顺序如下:

(320+120)÷(20-16)
=440÷4
=110.
25+180÷30-10
=25+6-10
=31-10
=21;
(2)计算顺序如下:
45-5×6÷2
=45-30÷2
=45-15
=30;
(3)计算顺序如下:
(320+120)÷(20-16)
=440÷4
=110.
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