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소숫점: 1자리 덧셈54

1
5.4
+
6.4
=
11.8
2
7.2
+
6.2
=
13.4
3
2.8
+
2.2
=
5
4
4.9
+
1.9
=
6.8
5
3.1
+
7.7
=
10.8
6
5.1
+
1.2
=
6.3
7
7.8
+
2.5
=
10.3
8
9.2
+
5.3
=
14.5
9
4.9
+
3.1
=
8
10
2.8
+
8.3
=
11.1
11
3.4
+
5.8
=
9.2
12
2.4
+
5.6
=
8
13
1.8
+
4.1
=
5.9
14
6.2
+
5.9
=
12.1
15
3.4
+
6.5
=
9.9