20以内退位减法30题 16-8= 17-6= 11-5= 14-5= 17-8= 15-6= 12-4= 13-4= 15-8= 12-6= 16-7= 11-6= 14-8= 14-6= 13-6= 13-5= 11-3= 11-7= 11-2= 16-9= 14-7= 12-5= 18-9= 12-8= 12-3= 14-5= 15-9= 14-7= 14-9= 14-8= 20以内口算30题(1/3) 2+18= 18-6= 16-1= 2+12= 5+11= 17-7= 5+1= 10-1= 12+5= 11-2= 15+1= 19-11= 10+9= 16-7= 2+15= 16-15= 15+3= 9-4= 20-1= 11-10= 6+8= 2+5= 2+6= 10+1= 17-16= 13+4= 20-1= 1+2= 20-3= 2+7= 19-6= 15-12= 9+1= 14-1= 5+2= 13+7= 19-4= 3+5= 17+3= 口算30题(10/3) 2+17= 18-14= 6-5= 2+10= 11-8= 3+16= 8+12= 8-7= 3+10= 14+3= 8-2= 1+3= 17+1= 20-5= 18-13= 5-2= 11-9= 18-15= 15-9= 13-1= 1+8= 19-14= 10+5= 17-3= 19-12= 20-13= 12-9= 18-6= 14-8= 7+8= 17+3= 7-4= 2+5= 14-3= 8+9= 9+3= 7+12= 20-19= 5-1= 20-15= 19-18= 12+2= 17-11= 10-1= 1+6= 14+1= 20-1= 18-7= 7+10= 19-10= 20-4= 6+6= 15-10= 8+11= 16+2= 18-7= 20-13= 17-14= 10-2= 9-7= 本文来源:https://www.wddqw.com/doc/3ffc41747fd5360cba1adb66.html