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소숫점: 1자리 덧셈20

1
2.8
+
2.3
=
5.1
2
7.4
+
7.3
=
14.7
3
4.5
+
8.8
=
13.3
4
5.5
+
7.5
=
13
5
5.9
+
3.6
=
9.5
6
3.5
+
4.8
=
8.3
7
5.4
+
6.1
=
11.5
8
8.5
+
5.9
=
14.4
9
7.6
+
3.8
=
11.4
10
5.4
+
3.6
=
9
11
4.3
+
9.3
=
13.6
12
3.1
+
4.7
=
7.8
13
1.5
+
2.5
=
4
14
4.8
+
4.4
=
9.2
15
2.3
+
9.9
=
12.2