问题 解答题
计算.
55×66÷(11×11)40.2-4÷80×2.4
1
8
×[
1
2
÷(
3
5
×
10
9
)]
1
2
+
1
4
)÷(
4
5
÷4-
1
10
答案

55×66÷(11×11),

=3630÷121,

=30;

40.2-4÷80×2.4,

=40.2-0.12,

=40.08;

1
8
×【
1
2
÷(
3
5
×
10
9
)】,

=

1
8
×【
1
2
×
3
2
】,

=

1
8
×
3
4

=

3
32

1
2
+
1
4
 )÷(
4
5
÷4-
1
10
 ),

=

3
4
×10,

=

15
2

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