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소숫점: 1자리 덧셈20

1
2.8
+
2.2
=
5
2
2.2
+
6.2
=
8.4
3
6.9
+
3.4
=
10.3
4
2.3
+
1.6
=
3.9
5
4.4
+
7.9
=
12.3
6
2.3
+
7.4
=
9.7
7
7.6
+
4.1
=
11.7
8
3.3
+
4.5
=
7.8
9
1.1
+
2.4
=
3.5
10
8.2
+
4.9
=
13.1
11
1.2
+
1.5
=
2.7
12
4.6
+
6.2
=
10.8
13
8.1
+
3.2
=
11.3
14
2.6
+
9.2
=
11.8
15
9.4
+
2.1
=
11.5