小学一年级20以内数学口算强化练习题.doc

13+7= 17+3= 20-6= 8-2= 17+2= 14+6= 5+14= 9+6= 5+6= 6+11= 14+5= 16+1= 13+3= 11-6= 9-9= 9-7= 17-10= 3+17= 5+3= 12-9= 18-17= 9-7= 7-4= 20-10= 7-3= 18-17= 2+11= 10+2= 8+5= 9-1= 14-5= 5+8= 7-5= 18+2= 11+5= 15-11= 11-8= 17+1= 11+9= 16+3= 13-7= 6+1= 15-4= 18-9= 12-7= 2+18= 6+1= 5-5= 4+14= 13-12= 13-4= 5-3= 2+12= 9-9= 13-6= 13+6= 7+4= 13-8= 15-13= 17+1= 19+1= 19-14= 4+15= 8+8= 13+5= 20-5= 14-3= 13+4= 18-3= 19-4= 10-8= 12-11= 15+1= 9-9= 11-7= 13-11= 9-3= 19-10= 5-3= 9-4= 11-11= 9+7= 14+2= 17-2= 5+9= 17+2= 16+2= 3+6= 8+6= 7+8= 10-9= 12+3= 10-10= 2+17= 14+1= 10-10= 10-7= 15+5= 20-5= 9+8=  10+8= 11-9= 9+1= 13-9= 10+5= 11+6= 6+12= 3+11= 9-4= 2+13= 9+1= 10-7= 18+2= 17+2= 6+2= 1+14= 9+3= 7+9= 11+1= 16+1= 5+10= 7+2= 6+4= 12+4= 20-8= 15+1= 12+7= 8-2= 18+2= 15+5= 11-2= 14-10= 4+2= 8+2= 6-4= 12+8= 7+11= 8+2= 20-10= 9-6= 8+1= 18+1= 10-10= 6+6= 14-14= 13-11= 11-8= 5-3= 9+1= 14+4= 11-8= 9+5= 10-9= 16-2= 14-8= 6+3= 18-8= 4+12= 5+9= 9-2= 20-2= 19-12= 14+1= 13-8= 11+5= 9-4= 2+9= 13-5= 19+1= 14-7= 9-2= 14-2= 5-5= 7-7= 10-2= 12-3= 7-4= 1+4= 16+1= 18+1= 12-3= 12-3= 6+9= 6+9= 6+9= 14-6= 8+2= 11+5= 6+5= 4+8= 15-8= 19+1= 4+12= 2+13= 7+8= 15-1= 9+8= 14-13= 1+8= 9+2=  14+2= 16-12= 7+4= 2-1= 9+5= 20-15= 14+5= 12-11= 4+1= 3+10= 8+1= 6+5= 2+6= 18+1= 14-1= 11+5= 9-7= 6+9= 4-1= 8-4= 11-9= 7-5= 2+11= 11+7= 15-7= 12-2= 11-9= 8+11= 7+5= 12+5= 15-14= 14+6= 12-3= 9+5= 15+1= 1+3= 15+1= 10-8= 14+3= 19+1= 1+18= 6-6= 14-8= 18+2= 14-10= 16-4= 15-13= 16+4= 10-2= 9+3= 1+2= 5+2= 20-1= 9-5= 3+17= 8-6= 17+3= 12+5= 19+1= 12-10= 17-13= 1+15= 17-2= 11-1= 2+7= 7+11= 6+1= 4+13= 9-6= 8+2= 20-7= 8+1= 2+8= 13-10= 16+2= 6+6= 15-15= 18-14= 12-2= 11+3= 11+3= 8+4= 10+9= 8+7= 13-12= 11-10= 10+10= 10-2= 8-1= 3+15= 17+1= 9-1= 18-8= 17+2= 18-9= 10-8= 13-4= 14-1= 19-6= 7+9=  10-4= 9-3= 14+2= 13+3= 17-2= 14+1= 17+3= 16-8= 9+1= 12-8= 10-2= 9-5= 9-5= 13+5= 8+2= 5+7= 16+3= 11+3= 15-15= 3+4= 1+2= 11-3= 10-2= 13+2= 12+8= 1+11= 20-7= 10+6= 3+17= 6+5= 6-1= 1+2= 12-8= 19+1=