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소수점 1자리 덧셈

1
2.8
+
1.7
=
4.5
2
2.1
+
1.2
=
3.3
3
9.8
+
4.5
=
14.3
4
5.5
+
5.4
=
10.9
5
3.1
+
7.2
=
10.3
6
4.9
+
1.9
=
6.8
7
7.8
+
3.8
=
11.6
8
3.1
+
7.7
=
10.8
9
1.4
+
2.4
=
3.8
10
2.4
+
8.9
=
11.3
11
2.5
+
7.3
=
9.8
12
6.1
+
1.8
=
7.9
13
5.5
+
4.4
=
9.9
14
8.7
+
4.2
=
12.9
15
3.8
+
6.6
=
10.4