一年级数学速算比赛题
15-6= |
|
12-10= |
|
20+2= |
4+16= |
|
7+13= |
|
15-12= |
18-10= |
|
12-9= |
|
11+9= |
16-12= |
|
12+10= |
|
20-10= |
15-7= |
|
10+15= |
|
15-15= |
5+20= |
|
9+11= |
|
20-3= |
14+5= |
|
10-6= |
|
18+2= |
20-2= |
|
15+4= |
|
20-5= |
5+13= |
|
12-5= |
|
20-6= |
15-3= |
|
17-12= |
|
20+30= |
42-2= |
|
15-10= |
|
15+3= |
18-8= |
|
5+15= |
|
20-9= |
90+5= |
|
10-7= |
|
90-60= |
20-9= |
|
12+7= |
|
13+7= |
15+5= |
|
12+3= |
|
20-5 = |
13-12= |
|
4+12= |
|
14-6= |
5+15= |
|
10-2= |
|
20+70= |
14+11= |
|
60+8= |
|
12+7= |
19-16= |
|
40+30= |
|
17+3= |
20-12= |
|
65+5= |
|
20-4= |
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