basic facts

9+3	12-9	5x7	18/6
5+9	14-9	6x8	20/4
9+10		7x9	48/6
8+7		7x9	28/4
6+7		8x7	27/3
9+8		8x8	24/4
			6/2
			49/7
			36/6
			54/6
			63/7
			81/9