Intermediate Problems

Intermediate Problems
Print out these problems to play the Brains Vs. Calculator Game

11 x1	11 x2	11 x3	11 x4	11 x5	11 x6	11 x7	11 x8	11 x9
12 x1	12 x2	12 x3	12 x4	12 x5	12 x6	12 x7	12 x8	12 x9
1 3 x1	13 x2	13 x3	13 x4	13 x5	3 x6	3 x7	3 x8	3 x9
14 x1	14 x2	14 x3	14 x4	14 x5	14 x6	14 x7	14 x8	14 x9
15 x1	15 x2	15 x3	15 x4	15 x5	15 x6	15 x7	15 x8	15 x9
9 x6	2 x6	6 x6	8 x6	7 x6	3 x6	4 x6	5 x6	10 x6
9 x5	8 x5	7 x5	6 x5	5 x5	4 x5	3 x5	10 x5	2 x5
10 x4	9 x4	8 x4	7 x4	6 x4	5 x4	4 x4	3 x4	2 x4
9 x2	7 -2	5 x2	3 x2	10 x2	8 x2	6 x2	4 x2	2 x2
9 x3	8 x3	5 x3	2 x3	7 x3	4 x3	6 x3	3 x3	10 x3