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소숫점: 1자리 덧셈80

1
8.3
+
1.5
=
9.8
2
5.6
+
1.6
=
7.2
3
5.3
+
5.1
=
10.4
4
3.1
+
4.3
=
7.4
5
8.4
+
2.9
=
11.3
6
5.6
+
8.4
=
14
7
6.5
+
2.4
=
8.9
8
4.1
+
4.3
=
8.4
9
5.2
+
5.2
=
10.4
10
5.3
+
7.1
=
12.4
11
5.7
+
7.8
=
13.5
12
1.1
+
5.9
=
7
13
1.3
+
3.3
=
4.6
14
9.1
+
5.6
=
14.7
15
3.2
+
4.2
=
7.4