1、 得分: 30以内加减法练习(一) 29-22= 26-12= 16-9= 12+18= 20-12= 13-6= 17-9= 30-4= 24-7= 30-6= 23-20= 27-20= 26-17= 27-22= 12-4= 27-12= 26-25= 22-15= 27-17= 15-7= 17-4= 21-17= 12-7= 29-15= 7+5= 14-6=
2、 27-16= 12+17= 21-6= 13+16= 20-3= 15+15= 9+15= 11-3= 23-5= 20-14= 13-5= 22-18= 7+8= 13+13= 29-18= 25-22= 21-5= 26-14= 22-14= 20-2= 12+12= 20-13= 21-4= 23-12= 11-2= 30-9= 9-3= 26-18= 27-14= 29-26= 28-13= 30-19= 27-10= 22-17= 21-10= 12-8= 21-14= 7+9= 12+13=
3、22-8= 12+14= 29-28= 25-17= 26-13= 22-7= 20-8= 29-11= 24-10= 28-21= 8+20= 29-13= 28-20= 11+16= 29-12= 21-20= 22-3= 11+18= 8+19= 20-15= 23-8= 18-9= 24-13= 25-8= 28-12= 23-9= 22-20= 19-10= 22-11= 29-27= 24-11= 8+9= 30-18= 27-19= 22-12= 24-22= 14+14= 22-5= 14+15=
4、 26-8= 29-22= 20-18= 29-16= 30-1= 23-19= 25-22= 30-17= 27-26= 28-9= 26-19= 30-11= 28-14= 13-7= 25-11= 21-11= 28-10= 27-11= 25-10= 22-6= 11-7= 30-23= 30-24= 13+14= 20-5= 26-20= 28-22= 13-4= 22-19= 30-28= 23-11= 24-15= 26-9= 27-13= 30-16= 27-18= 21-12= 12-3= 29-17
5、 25-23= 23-21= 12+15= 21-16= 28-11= 24-16= 21-7= 30-29= 26-23= 20-19= 21-3= 11-5= 23-6= 16-8= 20-17= 25-12= 24-19= 25-13= 23-15= 12-9= 30-7= 30-13= 30-14= 24-6= 14-7= 11+12= 25-15= 14-8= 29-21= 27-24= 26-15= 27-9= 23-7= 11-4= 21-8= 28-15= 23-13= 26-16= 28-24=
6、 11+17= 24-18= 27-25= 28-17= 29-25= 25-14= 24-20= 9+9= 11+13= 29-19= 9+16= 11-9= 21-19= 30-27= 23-10= 20-16= 24-8= 24-9= 9-4= 30-15= 27-21= 28-16= 11+11= 22-10= 20-4= 9+8= 8+21= 20-9= 14+16= 20-11= 21-13= 25-21= 9+17= 18+9= 8+22= 30-20= 21-9= 5+3= 9-5= 22-21=
7、25-6= 25-24= 11-6= 15-9= 16-7= 25-16= 30-12= 25-9= 23-14= 25-7= 21-15= 28-23= 30-2= 29-14= 23-18= 25-18= 12+16= 30-8= 29-23= 30-21= 22-13= 21-18= 23-4= 22-16= 30-26= 24-17= 11+14= 24-23= 28-18= 15-8= 13-8= 27-23= 26-11= 11+15= 28-19= 26-24= 27-15= 20-6= 13+15=
8、30-10= 13+17= 14-9= 15-6= 26-22= 24-21= 29-20= 13-9= 14-5= 11+19= 28-26= 29-10= 6+4= 24-12= 17-8= 23-17= 20-7= 23-22= 24-5= 29-24= 25-19= 24-14= 22-9= 30-3= 20-1= 12-6= 12-5= 28-27= 30-25= 25-20= 30-5= 23-16= 26-10= 11-8= 26-7= 26-21= 6+5= 27-8= 21-2= 22-4= 21
9、17= 12-7= 29-15= 7+5= 14-6= 27-16= 12+17= 21-6= 13+16= 20-3= 15+15= 9+15= 11-3= 23-5= 20-14= 13-5= 22-18= 7+8= 13+13= 29-22= 26-12= 16-9= 12+18= 20-12= 13-6= 17-9= 30-4= 24-7= 30-6= 23-20= 27-20= 26-17= 27-22= 12-4= 27-12= 26-25= 22-15= 27-17= 15-7= 17-4= 21-
10、17= 12-7= 29-15= 7+5= 14-6= 27-16= 12+17= 21-6= 13+16= 20-3= 15+15= 9+15= 11-3= 23-5= 20-14= 13-5= 22-18= 7+8= 13+13= 29-18= 25-22= 21-5= 26-14= 22-14= 20-2= 12+12= 20-13= 21-4= 23-12= 11-2= 30-9= 9-3= 26-18= 27-14= 29-26= 28-13= 30-19= 27-10= 22-17= 21-10= 12
11、8= 21-14= 7+9= 12+13= 22-8= 12+14= 29-28= 25-17= 26-13= 22-7= 20-8= 29-11= 24-10= 28-21= 8+20= 29-13= 28-20= 11+16= 29-12= 21-20= 22-3= 11+18= 8+19= 20-15= 23-8= 18-9= 24-13= 25-8= 28-12= 23-9= 22-20= 19-10= 22-11= 29-27= 24-11= 8+9= 30-18= 27-19= 22-12= 24-22
12、 14+14= 22-5= 14+15= 26-8= 29-22= 20-18= 29-16= 30-1= 23-19= 25-22= 30-17= 27-26= 28-9= 26-19= 30-11= 28-14= 13-7= 25-11= 21-11= 28-10= 27-11= 25-10= 22-6= 11-7= 30-23= 30-24= 13+14= 20-5= 26-20= 28-22= 13-4= 22-19= 30-28= 23-11= 24-15= 26-9= 27-13= 30-16= 27-
13、18= 21-12= 12-3= 29-17= 25-23= 23-21= 12+15= 21-16= 28-11= 24-16= 21-7= 30-29= 26-23= 20-19= 21-3= 11-5= 23-6= 16-8= 20-17= 25-12= 24-19= 25-13= 23-15= 12-9= 30-7= 30-13= 30-14= 24-6= 14-7= 11+12= 25-15= 14-8= 29-21= 27-24= 26-15= 27-9= 23-7= 11-4= 21-8= 28-15=
14、 23-13= 26-16= 28-24= 11+17= 24-18= 27-25= 28-17= 29-25= 25-14= 24-20= 9+9= 11+13= 29-19= 9+16= 11-9= 21-19= 30-27= 23-10= 20-16= 24-8= 24-9= 9-4= 30-15= 27-21= 28-16= 11+11= 22-10= 20-4= 9+8= 8+21= 20-9= 14+16= 20-11= 21-13= 25-21= 9+17= 18+9= 8+22= 30-20= 21
15、9= 5+3= 9-5= 22-21= 25-6= 25-24= 11-6= 15-9= 16-7= 25-16= 30-12= 25-9= 23-14= 25-7= 21-15= 28-23= 30-2= 29-14= 23-18= 25-18= 12+16= 30-8= 29-23= 30-21= 22-13= 21-18= 23-4= 22-16= 30-26= 24-17= 11+14= 24-23= 28-18= 15-8= 13-8= 27-23= 26-11= 11+15= 28-19= 26-24=
16、 27-15= 20-6= 13+15= 30-10= 13+17= 14-9= 15-6= 26-22= 24-21= 29-20= 13-9= 14-5= 11+19= 28-26= 29-10= 6+4= 24-12= 17-8= 23-17= 20-7= 23-22= 24-5= 29-24= 25-19= 24-14= 22-9= 30-3= 20-1= 12-6= 12-5= 28-27= 30-25= 25-20= 30-5= 14+16= 20-11= 21-13= 25-21= 9+17= 18+
17、9= 8+22= 23-16= 26-10= 11-8= 26-7= 26-21= 6+5= 27-8= 21-2= 22-4= 21-17= 12-7= 29-15= 7+5= 14-6= 27-16= 12+17= 21-6= 13+16= 20-3= 15+15= 9+15= 11-3= 7+2= 21+5= 9+1= 5+2= 4+11= 1+22= 7+11= 21+3= 4+13= 1+3= 14+11= 12+1= 3+1= 22+2= 17+12= 2+1= 12+12= 9+3= 20+5=
18、 11+5= 1+20= 26+2= 6+10= 16+6= 4+21= 10+9= 1+8= 7+17= 10+13= 2+10= 1+27= 10+12= 20+4= 18+1= 14+4= 14+16= 16+3= 7+3= 7+10= 22+2= 2+2= 1+25= 26+4= 6+2= 4+21= 5+11= 1+20= 19+9= 2+7= 13+6= 9+14= 16+4= 12+13= 28+2= 17+8= 16+11= 10+9= 1+25= 22+4= 19+9= 4+24= 3+5=
19、 5+15= 11+1= 3+15= 19+4= 1+13= 10+19= 5+4= 21+2= 3+1= 3+18= 2+4= 9+21= 8+5= 2+15= 1+1= 4+1= 6+10= 1+16= 10+7= 18+2= 2+24= 12+8= 10+9= 15+7= 2+22= 1+19= 2+5= 2+19= 20+7= 9+14= 5+10= 2+28= 29+1= 3+26= 17+11= 5+19= 1+28= 6+21= 7+21= 5+22= 9+9= 1+13= 7+10= 25+4
20、 5+19= 6+4= 8+14= 13+16= 1+10= 19+10= 5+12= 7+8= 13+5= 25+2= 13+7= 13+12= 6+3= 10+18= 10+17= 7+22= 5+13= 2+26= 5+6= 5+13= 10+1= 13+3= 21+6= 5+25= 3+16= 2+16= 4+11= 30-19= 26-13= 14-8= 26-18= 26-2= 18-12= 29-25= 16-1= 8-3= 19-5= 20-13= 27-13= 20-8= 22-1= 30-
21、11= 28-19= 20-18= 6-2= 8+22= 8+13= 12+8= 7+2= 1+29= 9+3= 8+22= 22+8= 1+24= 25+4= 18+7= 17+6= 15+11= 17+6= 3+20= 9+9= 1+10= 4+2= 12+16= 2+8= 19+6= 8+4= 18+11= 7+18= 14+9= 3+2= 1+25= 5+20= 13+5= 7+3= 8-4= 26-6= 9-3= 30-20= 28-13= 30-1= 24-13= 28-10= 22-18= 27
22、-9= 22-19= 14-5= 7-5= 27-7= 18-5= 20-13= 27-7= 13+10= 1+20= 4+12= 7+18= 6+10= 2+17= 5+1= 19+3= 13+14= 6+19= 1+11= 6+6= 2+4= 6+2= 21+3= 7+20= 14+2= 16+8= 2+28= 14+9= 19+3= 11+13= 12+3= 7+12= 8+12= 11+7= 10+19= 11+2= 2+2= 11+19= 2+20= 12+8= 16+8= 5+4= 17+13=
23、10+5= 9+13= 19+10= 10+13= 2+5= 6+23= 6+14= 9+14= 18+8= 11+14= 7+20= 9+21= 7+18= 27+1= 7+1= 13+5= 2+20= 16-13= 12-10= 7-2= 29-1= 12-8= 6-4= 22-13= 19-13= 29-17= 26-16= 17-6= 30-19= 15-2= 15-11= 24-5= 22-18= 10-3= 29-7= 20-10= 8-6= 21-14= 5-3= 17-6= 19-1= 27-11
24、 25-24= 14-2= 30-5= 25-2= 27-8= 19-16= 11-7= 24-24= 21-19= 14-14= 30-6= 7-6= 22-10= 28-23= 16-4= 19-10= 24-1= 15-9= 4-3= 22-17= 27-19= 26-3= 6-5= 2-2= 29-9= 17-5= 26-4= 30-27= 16-3= 29-17= 19-14= 30-24= 24-9= 6-4= 22-18= 20-8= 26-11= 27-1= 25-6= 29-28= 19-9=
25、 16-7= 15-12= 29-26= 11-11= 28-22= 17-16= 4-4= 16-1= 23-5= 10-3= 7-3= 24-3= 26-18= 18-14= 26-24= 17-6= 13-5= 14-9= 30-10= 26-22= 5-1= 11-11= 25-4= 25-17= 28-20= 28-23= 25-23= 10-9= 30-21= 26-1= 16-11= 21-16= 22-9= 5+20= 14+16= 24+2= 2+9= 4+21= 14+2= 24+4= 16+
26、4= 13+8= 15+3= 20+8= 4+22= 10+13= 2+10= 8+16= 4+11= 18+5= 13+14= 14+6= 11-2= 13-1= 19-17= 27-7= 29-25= 10-7= 25-11= 11-9= 30-14= 30-24= 11-11= 23-10= 18-17= 21-14= 14+13= 6+15= 10+12= 2+16= 12+9= 10+20= 1+25= 6+7= 13+11= 11+11= 4+13= 11+17= 13+13= 21-19= 21-13
27、 27-3= 11-10= 20-7= 27-3= 23-9= 14-3= 12-11= 8-4= 29-26= 21-2= 24-9= 20-19= 23-6= 16-8= 11+12= 21-8= 29-19= 7-4= 10-1= 25-17= 15-8= 25-12= 26-25= 26-14= 29-4= 28-7= 27-19= 20-17= 25-15= 6-5= 20-14= 5+17= 29-13= 26-18= 26-7= 6+12= 1+13= 18+11= 7+21= 25+1= 4+2
28、0= 7+19= 11+17= 7+21= 6+19= 29+1= 1+12= 1+9= 12+17= 20-3= 15+15= 26-14= 9-3= 12+14= 14-11= 14-12= 16-15= 27-12= 24-7= 7-7= 9-5= 21-19= 27-14= 25-23= 17-4= 9+17= 7+4= 20+1= 27-23= 28-22= 27-13= 29-17= 21-19= 22-17= 30-13= 15-13= 13-9= 26-18= 12-10= 10-1= 19-9=
29、 20-19= 9-1= 17-12= 10-9= 23-14= 16-12= 14-14= 13-13= 23-13= 17-13= 14-2= 22-11= 17-6= 28-12= 28-19= 24-13= 28-1= 20-12= 15-3= 28-11= 24-16= 21-7= 21-3= 11-5= 20-17= 25-12= 24-19= 25-13= 23-15= 12-9= 30-13= 30-14= 14-7= 25-15= 14-8= 29-21= 26-15= 11-4= 28-15= 2
30、3-13= 26-16= 11+17= 24-18= 28-17= 25-14= 11+13= 9+16= 11-9= 30-19= 15-9= 28-16= 22-1= 15-7= 11-5= 22-21= 30-14= 17-4= 29-18= 25-14= 15-2= 2-1= 10-8= 13-5= 18-8= 21-16= 28-10= 12-3= 30-14= 30-18= 10-5= 25-1= 18-5= 27-17= 15-5= 21-17= 29-14= 15-5= 15-2= 9-1= 8+1
31、 14+6= 21+3= 2+13= 23+1= 18+11= 13+8= 9+1= 15+7= 14+5= 13+14= 19+5= 17+3= 11+12= 1+12= 17+9= 2+1= 11+1= 14+1= 12+12= 13+2= 1+6= 11+17= 4+12= 22+1= 3+13= 19-1= 12-4= 28-13= 10-5= 21-2= 23-17= 26-10= 14-5= 6+12= 4+19= 7+12= 2+21= 5+13= 11+17= 4+14= 19+1= 7+22
32、 10+12= 19+7= 1+29= 1+4= 2+7= 7+8= 14+14= 11+19= 11+5= 15+14= 2+28= 2+2= 6+17= 4+7= 24+1= 13+11= 12+18= 12+13= 26+4= 12-7= 29-15= 7+5= 21-6= 13+16= 9+15= 11-3= 23-5= 20-14= 13-5= 22-18= 13+13= 29-18= 21-5= 22-14= 20-2= 12+12= 21-4= 30-9= 26-18= 27-14= 29-26=
33、 30-19= 27-10= 21-10= 21-14= 22-8= 29-28= 25-17= 21-1= 24-15= 20-18= 13-1= 27-8= 24-20= 21-5= 27-17= 22-3= 28-22= 28-20= 16-12= 30-26= 7-2= 22-18= 23-10= 20-5= 18-15= 25-11= 21-19= 3+17= 17+2= 17+1= 3+23= 8+6= 5+4= 18+5= 6+3= 6+17= 12+9= 9+12= 21-18= 23-4= 22
34、16= 30-26= 24-17= 11+14= 24-23= 28-18= 15-8= 13-8= 11+15= 28-19= 20-6= 13+15= 30-10= 14-9= 15-6= 26-22= 24-21= 29-20= 13-9= 14-5= 11+19= 28-26= 29-10= 6+4= 22-19= 30-28= 23-11= 24-15= 26-9= 30-16= 27-18= 21-12= 7-6= 27-24= 27-9= 27-8= 7+3= 28-3= 4+7= 20-13= 2
35、3-12= 14-7= 30-21= 12-3= 27-26= 27-24= 26-23= 27-25= 29-25= 8-8= 29-8= 22-9= 29-28= 5+7= 6+8= 10+5= 11+4= 27-16= 22-17= 12-8= 17-16= 8-5= 19-10= 14+16= 26-11= 26-24= 28-20= 29-4= 25-5= 20-6= 29-6= 9-8= 24-22= 29-4= 23-4= 30-29= 30-7= 24-6= 23-7= 28-24= 24-20=
36、 9+9= 29-3= 26-6= 3+5= 8+3= 4+20= 29-24= 24+1= 17+10= 1+12= 8+12= 21+3= 2+1= 8+1= 18+8= 5+3= 14-6= 7+8= 28-25= 11-2= 28-13= 7+9= 12+13= 29-9= 24+3= 22-13= 27-15= 13+17= 13-4= 11+12= 20+8= 5+14= 8+15= 18+12= 8+22= 5+14= 14+16= 4+23= 8+15= 8+8= 13+6= 21+7= 7+2
37、1= 11+7= 16+7= 7+22= 3+14= 19+11= 20+2= 23+4= 23+4= 12+18= 15+3= 9+7= 9+21= 10+15= 9+11= 16+9= 8+1= 20+6= 1+4= 20+4= 6+17= 7+20= 16+1= 15+9= 6+19= 3+24= 21+7= 27+2= 12+12= 6+20= 12+17= 27-21= 26-19= 8-8= 23-1= 20-11= 20-10= 24-12= 16-15= 14-6= 22-10= 29-23=
38、29-6= 15-2= 19-15= 30-28= 27-2= 25-14= 17-12= 15-13= 27-18= 30-25= 7-3= 27-20= 6-5= 11-8= 18-3= 26-7= 26-26= 20-4= 30-29= 22-15= 22-14= 15-14= 30-22= 26-12= 16-9= 12+18= 20-12= 13-6= 17-9= 30-4= 24-7= 30-6= 23-20= 27-20= 26-17= 27-22= 12-4= 27-12= 26-25= 22-15=
39、 27-17= 15-7= 22-4= 21-17= 17-10= 24-13= 21-19= 22-8= 6-2= 27-18= 15-6= 24-15= 21-1= 13-6= 30-10= 12-10= 29-17= 30-12= 17-4= 19-15= 23-18= 16-2= 23-21= 29-13= 25-24= 8-5= 20-12= 23-20= 18-1= 8-7= 16-4= 28-22= 19-15= 18-14= 13-7= 15-13= 30-13= 30-21= 22-15= 19-
40、4= 26-14= 10-9= 19-5= 30-29= 29-5= 13-2= 25-19= 20-10= 16-1= 9-5= 30-22= 22-2= 28-1= 24-11= 13-9= 29-23= 21-19= 30-27= 23-10= 20-16= 24-8= 24-9= 9-4= 30-15= 27-21= 28-16= 11+11= 22-10= 20-4= 9+8= 8+21= 20-9= 14+16= 20-11= 21-13= 25-21= 9+17= 18+9= 8+22= 30-20=
41、 21-9= 5+3= 9-5= 22-21= 25-6= 25-24= 11-6= 15-9= 16-7= 25-16= 30-12= 25-9= 23-14= 25-7= 21-15= 28-23= 30-2= 29-14= 23-18= 25-18= 12+16= 30-8= 29-23= 24-10= 22-17= 15-15= 5-2= 7-3= 13-2= 27-23= 21-11= 14-8= 28-18= 7-3= 29-4= 23-16= 30-19= 15-4= 30-14= 22-20= 2
42、5-24= 16-7= 20-1= 18-11= 15-9= 24-17= 15-8= 29-14= 22-6= 27-22= 5-3= 25-24= 27-13= 18-18= 7-1= 19-14= 29-24= 5-2= 28-9= 14-6= 9-8= 26-17= 24-13= 18-4= 28-15= 21-7= 19-6= 28-11= 13-9= 24-17= 17-15= 29-22= 29-8= 22-6= 23-20= 26+2= 6+18= 1+2= 2+19= 22+6= 8+10= 8
43、+3= 14+1= 13+6= 2+13= 17+9= 4+25= 16+2= 11+15= 28+2= 17+12= 21+7= 12+15= 4+26= 5+23= 3+17= 23+5= 12+5= 15+9= 3+10= 5+8= 12+5= 16+8= 25+4= 18+2= 16+14= 4+7= 5+3= 4+14= 21+2= 2+16= 18+5= 23+7= 14+1= 3+25= 23+7= 26+2= 6+4= 4+23= 5+2= 11+4= 3+27= 8+1= 15+9= 14+
44、9= 10+14= 14+15= 9+6= 10+13= 27+2= 1+28= 4+4= 10+9= 18+12= 5+14= 3+19= 23+7= 13+7= 9+14= 14+7= 13+10= 10+16= 21+4= 1+29= 22+7= 6+23= 14+3= 19+2= 5+22= 14+7= 8+8= 12+13= 4+23= 1+18= 20+2= 11+15= 2+25= 12+10= 7+20= 6+5= 10+13= 16+1= 7+5= 2+17= 6+2= 9+20= 4+25=
45、 4+19= 9+19= 11+2= 10+2= 12+8= 19+2= 16+5= 26-13= 22-7= 20-8= 29-11= 24-10= 28-21= 8+20= 29-13= 28-20= 11+16= 29-12= 21-20= 22-3= 11+18= 8+19= 20-15= 23-8= 18-9= 24-13= 25-8= 28-12= 23-9= 22-20= 19-10= 22-11= 29-27= 24-11= 8+9= 30-18= 27-19= 22-12= 24-22= 14+1
46、4= 15-12= 27-10= 27-27= 30-1= 27-5= 19-13= 21-3= 29-12= 5-4= 10-9= 30-1= 9-6= 17-5= 24-12= 17-8= 23-17= 20-7= 28-27= 26-7= 27-8= 21-17= 12-7= 7+5= 27-16= 12+17= 7+8= 7+14= 15+7= 7+1= 4+17= 7+19= 3+7= 23-17= 25-17= 27-15= 24-7= 27-1= 18-7= 15-7= 27-21= 7-1= 1
47、0-7= 28-17= 27-5= 27-4= 27-26= 27-7= 1+27= 7+19= 4+17= 15-8= 28-27= 10-1= 28-23= 18-5= 24-12= 4-2= 22-14= 16-3= 14-3= 10-5= 15-3= 27-22= 18-13= 27-21= 17-16= 7+14= 6+11= 8+14= 11+11= 8+17= 15+9= 4+17= 12+10= 11+6= 9+21= 1+25= 14+15= 29-22= 23-19= 28-14= 22-6=
48、 30-24= 23-21= 24-12= 24-5= 24-14= 20-1= 12-6= 12-5= 25-20= 30-5= 23-16= 26-10= 6+5= 21-2= 29-15= 14-6= 21-6= 13+16= 15+15= 9+15= 11-3= 23-5= 20-14= 13-5= 22-18= 21+4= 4+11= 28+1= 12+18= 15+1= 19+9= 12+3= 8+5= 13+8= 6+19= 3+26= 6+6= 2+8= 9+2= 3+13= 22+8= 2+3=
49、 2+25= 10+6= 12+10= 24+1= 5+14= 5+19= 5+3= 15+9= 2+21= 11+15= 10+6= 4+24= 14+9= 3+19= 2+12= 16+2= 18+10= 5-2= 28-25= 26-1= 14-12= 28-2= 18-2= 29-6= 18-5= 22-6= 25-16= 16-3= 26-26= 21-1= 2-1= 26-24= 16-3= 11-4= 22-13= 26-3= 28-18= 20-13= 16-14= 15-5= 18-9= 20
50、-14= 24-10= 22-3= 30-25= 30-3= 20-14= 28-18= 5-3= 12-9= 9-8= 16-15= 22-21= 11-9= 25-20= 30-4= 20-20= 22-11= 26-8= 29-21= 12-6= 22-21= 25-24= 18-11= 15-14= 24-5= 25-24= 26-2= 29-14= 21-5= 23-16= 20-3= 11-2= 28-11= 9+13= 6+8= 6+2= 8+14= 5+23= 1+12= 12+9= 4+26=






