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levi
1)
10+11
2)
10+10
3)
12-12
4)
12-10
5)
11-10
6)
11+11
7)
10+11
8)
10+11
levi (Answer Key)
1)
10+11
21
2)
10+10
20
3)
12-12
0
4)
12-10
2
5)
11-10
1
6)
11+11
22
7)
10+11
21
8)
10+11
21
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