1+9=
14 |
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|
17 |
|
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12 |
10 |
8 |
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8+5= 0+7= 8﹣2= 7+4= 19﹣3+2=
6+9= 8+6= 19﹣7= 12+3= 18﹣5﹣2=
8+=14 7+=12 8+=15
14-8= 12-7= 15-8=
把这三个数按大小排排队:
9×6= 53+7= 16+59= 7+59+20=
5×5= 27-19= 4×6= 9×5-12=
40-38= 9+7= ( )×6=18 5+3×8=
3×8= 6×1= 5×( )=45 6×7=5×7+( )