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一年级奥数口算

校园1.15W

7+6= 5+9= 8+7= 5+8=

一年级奥数口算

7+9= 9+8= 5+7= 8+4=

9+3= 9+9= 3+8= 6+5=

7+4= 8+8= 6+8= 2+9=

7+7= 3+7= 6+6= 6+9=

8+6= 3+8= 5+5= 7+8=

12–4= 15–6= 14–7= 11–8=

14–9= 15–7= 15–9= 16–7=

13–6= 16–9= 11–5= 12–8=

11–7= 18–9= 17–8= 14–8=

13–7= 15–8= 14–5= 11–9=

17–9= 17–9= 11–5= 13–8=