问题 解答题
(1)4050-6300÷42
(2)5.04×6.5-2.76
(3)175×
3
10
+
7
10
×175
答案

(1)4050-6300÷42,

=4050-150,

=3900;

(2)5.04×6.5-2.76,

=32.76-2.76,

=30;

(3)175×

3
10
+
7
10
×175,

=175×(

3
10
+
7
10
),

=175×1,

=175.

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