口诀练习
括号里最大能填几?
6×( )<48 ( )×6<55 ( )×9<57 ( )×7<70 7×( )<34 8×( )<68 ( )×6<20 34>5×( ) ( )×5<34 9×( )< 54 4×( ) < 16 4×( )<15 72 > ( )×9 ( )×6 < 41 5× ( )<27 ( )×5 < 35 12 > 5×( ) ( ) ×6>15 6×( )< 54 6×( ) < 17 ( ) ×3>10 24 > ( )×8 ( )×8 < 47 ( )×9 < 64 37 > ( ) ×6 29>5×( ) 7× ( )< 32 7×( )<38 45>8×( ) 3×( )<25 4×( ) <29 6×( ) < 35 ( )×8< 76 6×( )< 50 ( )× 9< 58 9×( ) < 46 ( )×5<32 ( )×7<65 6× ( )< 27 8× ( )<54 6×( ) < 35 7×( ) < 30 8×( ) < 50 5×( ) < 27 3×( ) < 25 4×( ) < 25 7×( ) < 50 5×( ) < 42