Add up to 20
Addition of two numbers with sum up to 20
4
+
9
4
+
2
2
+
2
6
+
4
7
+
13
1
+
1
2
+
9
2
+
10
5
+
11
12
+
7
9
+
8
2
+
5
1
+
1
10
+
10
3
+
12
5
+
6
6
+
14
2
+
1
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v0.32.0 (production)
