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Learn a Fact: 2 x 9

1
2
x  9
2
5
x  1
3
2
x  8
4
2
x  2
5
6
x  2
6
1
x  1
7
1
x  9
8
7
x  2
9
0
x  8
10
7
x  1
11
1
x  8
12
3
x  2
13
4
x  2
14
9
x  0
15
0
x  7
16
1
x  4
17
1
x  3
18
5
x  2
19
1
x  6
20
1
x  2

Fact Navigator

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2

x9


18

9

x2


18

Move on to other facts:
2
X 8
16
3
X 0
0

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