问题 解答题
计算.
(1)8-15×57÷4
(2)9.6÷3.2+5.1×4(3)49×(310÷35+25)(4)60×(34-23+25 )
答案

(1)8-15×57÷4,

=8-855÷4,

=8-213.75,

=-205.75;

(2)9.6÷3.2+5.1×4,

=3+20.4,

=23.4;

(3)49×(310÷35+25)

=49×(

62
7
+25),

=49×

62
7
+49×25,

=434+1225,

=1659;

(4)60×(34-23+25 ),

=60×36,

=2160.

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