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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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21x26x102= ? 55 692
100x200x1000 200 000 00
9x12+(3x4) 1296
23x40x38 34 960
1200x300 360 000
45x73x100 328 500
789x324 255 636
1000x2000 200 0000
657x987 648 459
308x12 3696
102x4 408
45x67 3015
980x2 1960
1287x3 3861
98x46 4508
657x8 5400
45x32 1440
543x2 1086
6x78 468
103x34 3502
768x4 3072
98x6 588
307x76 23 332
12x48 576
10000x4500x30000 1350 0000 0000
Created by: kiana0038