问题 解答题
脱式计算.
12-14×5÷35
0.125×16×2.5(1.2+4.8÷0.6)-0.2
2
5
×
1
7
+
3
5
×
1
7
(1-
8
15
×0.5)÷11
5
6
÷[1-(
3
4
+
1
12
)].
答案

(1)12-14×5÷35

=12-14×

1
7

=12-2,

=10;

(2)0.125×16×2.5

=0.125×4×4×2.5,

=(0.125×4)×(4×2.5),

=0.5×10,

=5;

(3)(1.2+4.8÷0.6)-0.2

=(1.2+8)-0.2,

=9.2-0.2,

=9;

(4)

2
5
×
1
7
+
3
5
×
1
7

=(

2
5
+
3
5
)×
1
7

=1×

1
7

=

1
7

(5)(1-

8
15
×0.5)÷11

=(1-

8
15
×
1
2
)÷11,

=(1-

4
15
)÷11,

=

11
15
×
1
11

=

1
15

(6)

5
6
÷[1-(
3
4
+
1
12
)]

=

5
6
÷[1-
5
6
],

=

5
6
÷
1
6

=

5
6
×6,

=5.

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