13-9= | 14-8= | 11-2= | 15-6-4= |
16-7= | 9+8= | 60+9= | 55-50+7= |
96-6= | 30+7= | 20+50= | 99+1= |
_____-6=9 13-_____=7 8+_____=13
11-_____=5 17-8=_____ 12-3=_____+_____
_____个十和_____个一合起来是_____ | 写作:_____ 读作:_____ |
5◯13-7 5+28◯33 35-20◯16
47 | 48 | 49 |
57 | 59 |
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可以组装( )辆小汽车,还剩 ( )个轮胎。