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1.
谁能算得又快又准。
18-9+9= | 4+5+6= | 16-8-8= |
13-4+8= | 15-7-2= | 4+3+7= |
11+5-9= | 18-9-4= | 2+9+3= |
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1.
11-3= | 13-8= | 14-6= | 11-2+6= | 4+8-6= |
13-3= | 18-9= | 12-7= | 12-5-3= | 8+7-9= |
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2.
连一连
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3.
口算训练
19-9= | 15-7= | 15-9= | 18-9= | 7+5= |
13-4= | 5+9= | 12-5= | 17-6= | 6+8= |
17-8= | 12-3= | 15-5= | 0+18= | 17-0= |
