소수점 1자리 덧셈
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소숫점: 1자리 덧셈20
1
2.5
+
6.9
=
9.4
2
1.1
+
4.5
=
5.6
3
2.5
+
3.7
=
6.2
4
4.7
+
2.5
=
7.2
5
3.2
+
3.8
=
7
6
8.6
+
8.2
=
16.8
7
9.8
+
3.5
=
13.3
8
9.1
+
2.6
=
11.7
9
2.2
+
6.2
=
8.4
10
6.9
+
2.7
=
9.6
11
6.3
+
7.2
=
13.5
12
3.7
+
1.8
=
5.5
13
4.8
+
2.2
=
7
14
8.4
+
1.1
=
9.5
15
3.3
+
5.4
=
8.7