10以内三个数连减（2023-07-21）

10以内三个数连减（2023-07-21）：7-4-3= 8-5-1= 7-4-3= 8-5-1= 9-6-0= 7-4-3= 8-3-1= 7-4-0= 8-3-1= 9-6-0= 7-1-2= 9-2-1= 7-1-2= 5-4-1= 8-2-0= 7-1-2= 5-2-1= 9-7-0= 5-1-3= 9-7-0= 8-1-3= 6-5-1= 9-2-0= 8-4-3= 7-5-2= 8-1-3= 6-5-1= 9-2-0= 6-3-1= 7-2-5= 8-4-0= 7-3-1= 8-2-4= 9-1-0= 7-3-1= 8-2-4= 6-4-0= 8-3-2= 6-4-0= 7-3-1= 8-2-6= 6-4-0= 8-3-2= 6-4-0= 9-7-1= 7-1-4= 9-6-3= 5-3-2= 8-1-4= 9-2-1= 7-1-4= 9-6-3= 5-4-1= 8-7-0= 5-...