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소숫점: 1자리 덧셈20

1
2.1
+
5.4
=
7.5
2
7.2
+
4.6
=
11.8
3
6.3
+
4.2
=
10.5
4
4.3
+
1.6
=
5.9
5
5.1
+
5.1
=
10.2
6
9.4
+
6.9
=
16.3
7
2.6
+
4.5
=
7.1
8
1.6
+
2.5
=
4.1
9
4.1
+
9.3
=
13.4
10
1.4
+
6.5
=
7.9
11
4.2
+
3.8
=
8
12
7.9
+
4.8
=
12.7
13
1.3
+
7.7
=
9
14
2.1
+
1.9
=
4
15
7.4
+
4.2
=
11.6