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소숫점: 1자리 덧셈25

1
2.5
+
9.4
=
11.9
2
8.7
+
7.1
=
15.8
3
6.5
+
6.5
=
13
4
4.2
+
2.3
=
6.5
5
9.1
+
3.1
=
12.2
6
4.3
+
5.9
=
10.2
7
3.4
+
1.4
=
4.8
8
2.5
+
1.3
=
3.8
9
2.4
+
1.7
=
4.1
10
5.2
+
1.4
=
6.6
11
1.9
+
1.7
=
3.6
12
9.3
+
2.1
=
11.4
13
1.2
+
6.3
=
7.5
14
2.4
+
8.1
=
10.5
15
2.9
+
2.5
=
5.4