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소숫점: 1자리 덧셈

1
1.9
+
1.8
=
3.7
2
4.2
+
6.7
=
10.9
3
5.9
+
7.9
=
13.8
4
3.8
+
2.2
=
6
5
6.3
+
6.1
=
12.4
6
5.2
+
2.4
=
7.6
7
2.8
+
1.5
=
4.3
8
4.4
+
1.3
=
5.7
9
4.1
+
4.9
=
9
10
3.9
+
4.6
=
8.5
11
1.4
+
7.4
=
8.8
12
8.3
+
4.1
=
12.4
13
1.2
+
8.6
=
9.8
14
3.8
+
3.6
=
7.4
15
1.5
+
8.4
=
9.9