问题 解答题
计算下面各题.
675-225÷15×45
3.5×2.6+5.4÷18
3
5
6
-2
3
4
)÷(
2
7
+
13
14
(3.86+2×3.86+3.86)×0.25.
答案

(1)675-225÷15×45,

=675-15×45,

=675-675,

=0;

(2)3.5×2.6+5.4÷18,

=9.1+0.3,

=9.4;

(3)(3

5
6
-2
3
4
)÷(
2
7
+
13
14
),

=

13
12
÷
17
14

=

91
102

(4)(3.86+2×3.86+3.86)×0.25,

=(3.86×4)×0.25,

=3.86×(4×0.25),

=3.86×1,

=3.86.

计算题
问答题 简答题