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소숫점: 1자리 덧셈20

1
2.1
+
5.3
=
7.4
2
8.3
+
1.4
=
9.7
3
3.4
+
6.9
=
10.3
4
1.3
+
1.2
=
2.5
5
2.5
+
2.4
=
4.9
6
4.1
+
4.2
=
8.3
7
1.8
+
7.5
=
9.3
8
2.3
+
4.9
=
7.2
9
8.3
+
8.2
=
16.5
10
8.4
+
8.8
=
17.2
11
6.3
+
1.7
=
8
12
2.9
+
3.3
=
6.2
13
6.8
+
6.2
=
13
14
3.4
+
1.3
=
4.7
15
6.8
+
3.6
=
10.4