问题 解答题
计算:
1
8
×
1
6
+
7
8
÷6
9.6÷0.4÷2.5
(8×
4
9
+8×
5
9
)÷
4
11
答案

(1)

1
8
×
1
6
+
7
8
÷6

=

1
8
×
1
6
+
7
8
×
1
6

=(

1
8
+
7
8
)×
1
6

=1×

1
6

=

1
6

(2)9.6÷0.4÷2.5

=9.6÷(0.4×2.5),

=9.6÷1,

=9.6;

(3)(8×

4
9
+8×
5
9
)÷
4
11

=[(

4
9
+
5
9
)×8]×
11
4

=1×8×

11
4

=22.

单项选择题 B1型题
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