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To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

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2 Digit Addition

QuestionAnswer
10 + 10 20
11 + 11 22
12 + 12 24
13 + 13 26
14 + 14 28
15 + 15 30
16 + 16 32
17 + 17 34
18 + 18 36
19 + 19 38
20 + 20 40
21 + 21 42
22 + 22 44
23 + 23 46
24 + 24 48
25 + 25 50
26 + 26 52
27 + 27 54
28 + 28 56
29 + 29 58
30 + 30 60
31 + 31 62
32 + 32 64
33 + 33 66
34 + 34 68
35 + 35 70
36 + 36 72
37 + 37 74
38 + 38 76
39 + 39 78
40 + 40 80
41 + 41 82
42 + 42 84
43 + 43 86
44 + 44 88
45 + 45 90
46 + 46 92
47 + 47 94
48 + 48 96
49 + 49 98
50 + 50 100
51 + 51 102
52 + 52 104
53 + 53 106
54 + 54 108
55 + 55 110
56 + 56 112
57 + 57 114
58 + 58 116
59 + 59 118
60 + 60 120
61 + 61 122
62 + 62 124
63 + 63 126
64 + 64 128
65 + 65 130
66 + 66 132
67 + 67 134
68 + 68 136
69 + 69 138
70 + 70 140
71 + 71 142
72 + 72 144
73 + 73 146
74 + 74 148
75 + 75 150
76 + 76 152
77 + 77 154
78 + 78 156
79 + 79 158
80 + 80 160
81 + 81 162
82 + 82 164
83 + 83 166
84 + 84 168
85 + 85 170
86 + 86 172
87 + 87 174
88 + 88 176
89 + 89 178
90 + 90 180
91 + 91 182
92 + 92 184
93 + 93 186
94 + 94 188
95 + 95 190
96 + 96 192
97 + 97 194
98 + 98 196
99 + 99 198
10 + 50 60
11 + 51 62
12 + 52 64
13 + 53 66
14 + 54 68
15 + 55 70
16 + 56 72
17 + 57 74
18 + 58 76
19 + 59 78
20 + 60 80
21 + 61 82
22 + 62 84
23 + 63 86
24 + 64 88
25 + 65 90
26 + 66 92
27 + 67 94
28 + 68 96
29 + 69 98
30 + 70 100
31 + 71 102
32 + 72 104
33 + 73 106
34 + 74 108
35 + 75 110
36 + 76 112
37 + 77 114
38 + 78 116
39 + 79 118
40 + 80 120
41 + 81 122
42 + 82 124
43 + 83 126
44 + 84 128
45 + 85 130
46 + 86 132
47 + 87 134
48 + 88 136
49 + 89 138
50 + 90 140
51 + 91 142
52 + 92 144
53 + 93 146
54 + 94 148
55 + 95 150
56 + 96 152
57 + 97 154
58 + 98 156
59 + 99 158
60 + 50 110
61 + 51 112
62 + 52 114
63 + 53 116
64 + 54 118
65 + 55 120
66 + 56 122
67 + 57 124
68 + 58 126
69 + 59 128
70 + 60 130
71 + 61 132
72 + 62 134
73 + 63 136
74 + 64 138
75 + 65 140
76 + 66 142
77 + 67 144
78 + 68 146
79 + 69 148
80 + 70 150
81 + 71 152
82 + 72 154
83 + 73 156
84 + 74 158
85 + 75 160
86 + 76 162
87 + 77 164
88 + 78 166
89 + 79 168
90 + 80 170
91 + 81 172
92 + 82 174
93 + 83 176
94 + 84 178
95 + 85 180
96 + 86 182
97 + 87 184
98 + 88 186
99 + 89 188
Created by: mtlaw