文档介绍：道以内加减法口算练习题————————————————————————————————作者:————————————————————————————————日期:    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= 3+8=                   8+4=                   17+3= 17+3=                  4+12=                  14+3= 1+14=                  1+5=                   3+14= 13-3=                  10+2=                  9-8= 12-8=                  2+5=                   19-18= 14+3=                  17-3=                  9-4= 6+13=                  13+5=                  3+7= 12+3=                  5+6=                   17-1= 5+2=                   7+7=                   6+7= 12-11=                 20-13=                 13+6= 15-5=                  20-1=                  5+8= 18-12=                 7+1=                   20-6= 8+6=                   3+13=                  1+19= 17-16=                 7+13=                  10-2= 11+6=                  1+8=                   14+2= 9+5=                   2+10=                  1+12= 8+12=                  11-10=                 3+3= 3+17=                  8+4=                   8+2= 2-1=                   1+4=                   9+9= 8+7=                   20-18=                 19-5= 5+6=                   20-3=                  17-10= 1+16=                  9+1=                   9+10= 10-2=                  18-17=                 6+14= 18-8=                  9+6=                   8-6= 7