二、直減、破五減基本練習(xí)
9-9
9-8 8-8
9-7 8-7 7-7
9-6 8-6 7-6 6-6
9-5 8-5 7-5 6-5 5-5
9-4 8-4 7-4 6-4 5-4 4-4
9-3 8-3 7-3 6-3 5-3 4-3 3-3
9-2 8-2 7-2 6-2 5-2 4-2 3-2 2-2
9-1 8-1 7-1 6-1 5-1 4-1 3-1 2-1 1-1
9-9
9-8 8-8
9-7 8-7 7-7
9-6 8-6 7-6 6-6
9-5 8-5 7-5 6-5 5-5
9-4 8-4 7-4 6-4 5-4 4-4
9-3 8-3 7-3 6-3 5-3 4-3 3-3
9-2 8-2 7-2 6-2 5-2 4-2 3-2 2-2
9-1 8-1 7-1 6-1 5-1 4-1 3-1 2-1 1-1