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소수점 1자리 덧셈

1
4.2
+
3.5
=
7.7
2
6.3
+
1.8
=
8.1
3
3.1
+
9.9
=
13
4
5.8
+
5.2
=
11
5
3.1
+
3.5
=
6.6
6
3.9
+
2.1
=
6
7
7.7
+
2.6
=
10.3
8
4.6
+
4.1
=
8.7
9
3.5
+
5.5
=
9
10
2.5
+
9.1
=
11.6
11
5.8
+
7.5
=
13.3
12
9.5
+
1.1
=
10.6
13
2.3
+
7.3
=
9.6
14
5.4
+
7.3
=
12.7
15
3.5
+
6.6
=
10.1