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20
以内加法练习题（凑十法）
9
+
2
=
9
+
5
=
9
+
8
=
8
+
8
=
8
+
5
=
7
+
9
=
7
+
6
=
6
+
9
=
9
+
3
=
9
+
6
=
9
+
9
=
8
+
8
+
7
=
8
+
4
=
8
+
7
+
8
=
7
+
7
+
4
=
7
+
6
+
8
=
6
+
9+
4
=
9
+
7
=
9
=
+
6
=
3
=
7
=
5
=
7
=
8
6
+
6
=
5
+
8
=
4
+
9
=
3
+
9
=
5
+
6
=
9
+
7
=
5
+
8
=
4
+
7
=
6
+
5
=
5
+
5
+
7
=
5
+
4
+
8
=
3
+
8
=
7
+
8
=
9
+
4
=
9
+
9
=
5
+
9
=
9
=
6
=
4
+
7
=
2
+
9
=
9+
4
=
6+
7
=
6
+
8
=
8
+
3
=
-
-
-
-
-
-
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