1- Click a subtrahend (number to sutract) on the Choose Drill menu at the left 2- Mentally choose one of the flash cards below and think of the answer 3- Click the numbers on the card to view the answer
Choose Drill
1 - 2
2 - 2
3 - 2
4 - 2
5 - 2
6 - 2
7 - 2
8 - 2
9 - 2
10 - 2
11 - 2
12 - 2