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소숫점: 1자리 덧셈20

1
2.1
+
6.5
=
8.6
2
7.9
+
4.1
=
12
3
3.4
+
9.7
=
13.1
4
5.6
+
3.6
=
9.2
5
2.6
+
2.5
=
5.1
6
2.2
+
5.2
=
7.4
7
2.5
+
4.2
=
6.7
8
3.1
+
8.3
=
11.4
9
3.6
+
3.6
=
7.2
10
2.1
+
7.3
=
9.4
11
3.8
+
2.8
=
6.6
12
7.6
+
3.6
=
11.2
13
2.2
+
2.3
=
4.5
14
2.2
+
7.5
=
9.7
15
2.7
+
4.1
=
6.8