题目内容

直接写得数．
1
3
+
1
4
=
7
12
1
2
-
1
6
=
1
3
1-
1
8
=
7
8
3
4
-0.25=0.5
6+
1
8
=6
1
8
1
6
+
5
6
=1
1
9
+
5
9
=
2
3
2
3
-
2
9
=
4
9
 1-
7
10
-
3
10
=0
3
7
+
4
13
+
9
13
=1
3
7
．
分析：根据分数加减法的计算方法进行计算即可得到答案．
解答：
解：
1
3
+
1
4
=
7
12
1
2
-
1
6
=
1
3
1-
1
8
=
7
8
3
4
-0.25=0.5
6+
1
8
=6
1
8
1
6
+
5
6
=1
1
9
+
5
9
=
2
3
2
3
-
2
9
=
4
9
 1-
7
10
-
3
10
=0
3
7
+
4
13
+
9
13
=1
3
7
．
点评：此题主要考查的是分数加减法的计算方法．
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+
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3
8
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3
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5
6
=
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1
3
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1
4
×
2
5
=
5
6
×12=
7
12
×
3
14
=
30×
3
5
=
9×
7
18
=
2
3
×
9
10
=
4
25
×50=		 6×
1
6
=
4
11
×
11
4
=

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