问题 解答题
直接写出得数
2
3
+
1
4
-
2
3
+
1
4
=
3
4
×
2
5
÷
3
4
×
2
5
=
2
7
-
2
7
=
32.8+17.2=
1
3
+(
5
8
-
1
3
)
=
1
2
+
1
3
=
1÷0.125=(
1
4
+
5
6
)×12
=
5-
7
5
-1.6
=
0.125×18=
答案

2
3
+
1
4
-
2
3
+
1
4
=
1
2
3
4
×
2
5
÷
3
4
×
2
5
=
4
25
2
7
-
2
7
=
4
7
32.8+17.2=50,
1
3
+(
5
8
-
1
3
)
=
5
8
1
2
+
1
3
=
5
6
1÷0.125=8,(
1
4
+
5
6
)×12
=13,
5-
7
5
-1.6
=2,
0.125×18=2.25.

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