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소수점 1자리 덧셈

1
3.8
+
4.9
=
8.7
2
5.7
+
5.2
=
10.9
3
5.5
+
9.9
=
15.4
4
1.1
+
2.1
=
3.2
5
3.7
+
1.9
=
5.6
6
8.2
+
1.9
=
10.1
7
4.3
+
7.2
=
11.5
8
3.6
+
6.3
=
9.9
9
7.4
+
2.4
=
9.8
10
1.2
+
5.5
=
6.7
11
8.2
+
5.1
=
13.3
12
7.1
+
1.5
=
8.6
13
4.6
+
3.2
=
7.8
14
8.1
+
2.6
=
10.7
15
1.5
+
6.8
=
8.3