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소숫점: 1자리 덧셈54

1
5.4
+
5.7
=
11.1
2
2.8
+
5.5
=
8.3
3
8.5
+
9.6
=
18.1
4
4.1
+
1.1
=
5.2
5
5.4
+
5.3
=
10.7
6
3.8
+
3.2
=
7
7
6.4
+
1.2
=
7.6
8
6.2
+
1.2
=
7.4
9
3.4
+
7.4
=
10.8
10
8.5
+
2.4
=
10.9
11
7.1
+
9.9
=
17
12
5.9
+
9.8
=
15.7
13
4.9
+
4.4
=
9.3
14
2.8
+
2.6
=
5.4
15
5.1
+
6.9
=
12