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소숫점: 1자리 덧셈30

1
3.6
+
2.8
=
6.4
2
8.1
+
8.6
=
16.7
3
1.3
+
3.4
=
4.7
4
2.4
+
3.1
=
5.5
5
8.6
+
5.2
=
13.8
6
4.4
+
8.6
=
13
7
2.4
+
3.3
=
5.7
8
6.6
+
1.3
=
7.9
9
8.4
+
2.6
=
11
10
1.3
+
8.5
=
9.8
11
4.6
+
8.4
=
13
12
7.2
+
5.7
=
12.9
13
5.4
+
7.4
=
12.8
14
1.6
+
5.5
=
7.1
15
6.9
+
2.5
=
9.4