问题 解答题
简算
11.82÷(3.94+2×3.94)
8
15
-
17
29
+
7
15
-
12
29
答案

(1)11.82÷(3.94+2×3.94),

=11.82÷[3.94×(1+2)],

=11.82÷[3.94×3],

=11.82÷11.82,

=1;

(2)

8
15
-
17
29
+
7
15
-
12
29

=

8
15
+
7
15
-(
17
29
+
12
29
),

=1-1,

=0.

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