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소숫점: 1자리 덧셈20

1
2.6
+
4.1
=
6.7
2
5.5
+
4.5
=
10
3
4.7
+
3.1
=
7.8
4
6.2
+
5.7
=
11.9
5
1.3
+
8.8
=
10.1
6
2.1
+
2.4
=
4.5
7
7.5
+
8.7
=
16.2
8
5.9
+
4.1
=
10
9
7.3
+
2.3
=
9.6
10
9.3
+
4.1
=
13.4
11
2.5
+
6.3
=
8.8
12
5.9
+
1.9
=
7.8
13
7.1
+
3.6
=
10.7
14
6.6
+
5.4
=
12
15
5.3
+
7.5
=
12.8