题目内容

2
3
+
1
4
÷
3
4
+
1
4
=
15÷
1
15
×
1
15
=
0.125÷
1
8
÷
7
9
=
8
9
÷
1
18
=
0.68+
2
3
+0.32
=
2
5
×5÷
2
5
×5
=
5
7
×10+10×
2
7
=
0.33=
1÷7×24=5-1.4-1.6=
(1)
2
3
+
1
4
÷
3
4
+
1
4

=
3
4
+
1
3
+
1
4

=1
1
4


(2)15÷
1
15
×
1
15

=15×15×
1
15

=15;

(3)0.125÷
1
8
÷
7
9

=
1
8
×
9
7

=1
2
7


(4)
8
9
÷
1
18
=0;

(5)0.68+
2
3
+0.32

=(0.68+0.32)+
2
3

=1+
2
3

=1
2
3


(6)
2
5
×5÷
2
5
×5

=
2
5
×5×
5
2
×5

=25;

(7)
5
7
×10+10×
2
7

=(
5
7
+
2
7
)×10,
=1×10,
=10;

(8)0.33
=0.3×0.3×0.3,
=0.027;

(9)1÷7×24,
=
1
7
×24

=3
3
7


(10)5-1.4-1.6,
=5-(1.4+1.6),
=5-3,
=2.
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