x
0
1
2
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8
9
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12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
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9
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11
12
2
0
2
4
6
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24
3
0
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6
9
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15
18
21
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27
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33
36
4
0
4
8
12
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24
28
32
36
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44
48
5
0
5
10
15
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25
30
35
40
45
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55
60
6
0
6
12
18
24
30
36
42
48
54
60
66
72
7
0
7
14
21
28
35
42
49
56
63
70
77
84
8
0
8
16
24
32
40
48
56
64
72
80
88
96
9
0
9
18
27
36
45
54
63
72
81
90
99
108
10
0
10
20
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120
11
0
11
22
33
44
55
66
77
88
99
110
121
132
12
0
12
24
36
48
60
72
84
96
108
120
132
144

Why does 2 x 9 = 18?

Because adding 2 9's together makes 18.

That is, because 9 + 9 = 18.

Mathgrow

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