소수점 1자리 덧셈
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소숫점: 1자리 덧셈20
1
2.8
+
5.7
=
8.5
2
9.2
+
5.6
=
14.8
3
5.3
+
1.5
=
6.8
4
2.1
+
8.4
=
10.5
5
8.2
+
2.5
=
10.7
6
3.1
+
2.5
=
5.6
7
5.7
+
5.7
=
11.4
8
5.7
+
3.4
=
9.1
9
4.6
+
1.1
=
5.7
10
3.7
+
5.8
=
9.5
11
5.2
+
4.3
=
9.5
12
6.2
+
3.9
=
10.1
13
1.5
+
4.3
=
5.8
14
3.5
+
3.7
=
7.2
15
1.3
+
1.5
=
2.8