5
8
-
3
8
=
1
2
+
3
2
=
1
3
+
1
6
=
1
5
-
1
10
=
1
2
+
1
3
=
3
4
-
1
2
=
1-
3
7
=
2+
1
3
=
分析:根據(jù)分?jǐn)?shù)加減法的計(jì)算方法進(jìn)行計(jì)算即可得到答案.
解答:解:
5
8
-
3
8
=
1
4
1
2
+
3
2
=2
1
3
+
1
6
=
1
2
1
5
-
1
10
=
1
10
1
2
+
1
3
=
5
6
3
4
-
1
2
=
1
4
1-
3
7
=
4
7
2+
1
3
=2
1
3
點(diǎn)評(píng):此題主要考查的是分?jǐn)?shù)加減法的計(jì)算方法的應(yīng)用.
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