30以内加减法练习题
29-22= 14-6= 11-2= 29-13= 26-12= 27-16=
30-9= 28-20= 16-9= 12+17= 9-3= 11+16=
12+18= 21-6= 26-18= 29-12= 20-12= 13+16=
27-14= 21- 20= 13-6= 20-3= 29-26= 22-3=
17-9= 15+15= 28-13= 11+18= 30-4= 9+15=
30-19= 8+19= 24-7= 11-3= 27-10= 20-15=
30-6= 23-5= 22-17= 23-8= 23-20= 20-14=
21-10= 18-9= 27-20= 13-5= 12-8= 24-13=
26-17= 22-18= 21-14= 25-8= 27-22= 7+8=
7+9= 28-12= 12-4= 13+13= 12+13= 23-9=
27-12= 29-18= 22-8= 22-20= 26-25= 25-22=
12+14= 19-10= 22-15= 21-5= 29-28= 22-11 =
27-17= 26-14= 25-17= 29-27= 15-7= 22-14=
26-13= 24-11 = 17-4= 20-2= 22-7= 8+9=
21-17= 12+12= 20-8= 30-18= 12-7=
20-13= 29-11 = 27-19= 29-15=
21- 4= 24-10= 22-12= 7+5= 23-12=
28-21 = 24-22= 8+20=