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소수점 1자리 덧셈

1
4.2
+
8.6
=
12.8
2
3.2
+
4.5
=
7.7
3
5.7
+
2.2
=
7.9
4
2.5
+
8.3
=
10.8
5
7.2
+
5.5
=
12.7
6
1.5
+
2.2
=
3.7
7
2.8
+
3.7
=
6.5
8
5.6
+
3.6
=
9.2
9
3.2
+
4.9
=
8.1
10
4.3
+
3.5
=
7.8
11
2.2
+
9.1
=
11.3
12
6.2
+
4.7
=
10.9
13
3.8
+
5.3
=
9.1
14
1.5
+
9.2
=
10.7
15
6.1
+
2.3
=
8.4