-
1.
算一算
14-5= | 11-6= | 12-3= | 12-4-2= |
15-8= | 16-6= | 14-6= | 11-3+6= |
12-4= | 11-8= | 17-9= | 5+9-8= |
14-10= | 18-9= | 13-7= | 15-7-7= |
-
1.
看谁算的都对。
13-4-7= | 9+4-6= |
15-8+7= | 8+7-8= |
5+6+7= | 7+6-9= |
-
2.
口算训练
6+8-9= | 4+7-9= | 10-8-1= | 13-9+2= | 11-9+4= |
14-9+6= | 8+3+1= | 6+4+0= | 14-3-8= | 15-5-1= |
13-9+2= | 8+5-3= | 12+3-8= | 7+5-6= | 19-8-9= |
-
3.
算一算。
7+8-6= | 15-9-3= | 14-7+5= |
13-6+4= | 4+9-8= | 5+11-7= |
