以内加减混合练习题20 4+3+8=
9+1+6= 4+1+9= 20-9-10= 17-7-9=
3+7+5= 5+6+2= 20-2-9= 16-9-6=
20-3-6= 11-2-9= 17-2-9= 1+9+10=
2+6+5= 3+9+5= 4+10+1= 8+7+1=
10-9-1= 17-8-6= 14-9-5= 1+3+8=
1+5+7= 2+3+9= 7-4-1= 20-6-2=
2+9+6= 8+5+7= 12-2-4= 5+6+9=
5+4+3= 20-8-6= 15-8-5= 6+3+1=
14-3-6= 14-8-4= 4+6+4=
--- --
13-2-8= 7+7+2= 10+1+5= 19-5-6= 18-7-7=
10-3-6= 10+2+3= 13-9-3= 3+7+2=
17-6-8= 14-7-4= 5+8+1= 4 ...
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以内加减混合练习题20 7-5-2=
20-9-7= 3+6+7= 19-6-3= 2+10+8=
16-5-1= 4+1+6= 19-8-2= 17-4-2=
17-6-1= 12-6-5= 20-8-2= 16-5-6=
13-5-3= 18-10-8= 2+6+6= 16-6-10=
16-4-4= 9-6-3= 5+5+8= 10+7+1= 4+6+5= 8+2+4= 15-5-10= 20-10-1=
15-2-2= 10+1+9= 9-3-6= 20-2-5=
16-7-5= 15-7-3= 13-1-4= 5+3+2=
7+6+1= 19-2-2= 16-5-1=
--- --
7+7+6= 6+1+6= 9-1-6= 11-5-1= 6-4-1=
6+3+5= 18-1-2= 5+7+1= 10+1+2=
14-2-5= 3+1+4= 11-4-1= 5
...
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以内加减混合练习题20 10+2+8=
16-9-2= 11-1-1= 3+10+5=
17-9-5= 5+1+10= 1+1+3= 1+3+2= 12-7-2=
20-7-5= 1+3+5= 15-9-3= 11-4-4=
15-10-4= 7+2+4= 12-1-2= 17-8-3=
18-5-3= 19-8-2= 20-7-8= 12-8-4= 6+9+4= 3+7+5= 6-1-5= 17-2-1=
17-3-10= 18-2-7= 5+5+4=
16-3-5=
18-8-4= 3+6+7= 7+8+3= 16-5-9= 9-3-2= 1+1+6= 1+4+2=
--- --
5-2-3= 10+3+3= 20-4-7= 13-2-9= 5+7+4=
16-4-7= 19-10-8= 14-7-4= 4+8+8=
16-5-4= 18-4-6= 20-5-9= 6 ...
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以内加减混合练习题20 8-4-1=
3+7+9= 1+2+3= 12-6-1=