文档介绍：
45×7, 85,18, 9，18, 25×2,
45×9, 11，22, 115,24, 25×4,
35×2, 125,26, 564,12, 25×6,
35×4, 456，45, 453×7+4= 5×( )<32 24?8= 6×8= 4×6，2=
40?5= 6×7= 5×9，6=
600×4= 4800?2= 84+7= 8×9+21= 50×9= 200?2= 80,44= 4600+4700= 70×7= 30?3= 1800,900= 730,190=
8×800= 6000?2= 4900,1800= 3700,370= 5×500= 36?3= 420+80= 8500,5500= 19×4= 800?4= 430+1000= 3200+5100=
( )×3<25 300?3= 500,60= 96,42= 2×( )<15 48?2= 89,8= 1200,400= ( )×4<25 99?9= 64,8= 830,300=
4×7+9= 26?2= 34+9= 800+900= 3×6，7= 600?3= 14?7= 58,36=
3×9，4= 38?1= 5+58= 7000+3000=
6×6，7= 93?3= 64?8= 5×7= 9×2，8= 77?7= 6×3= 72?9= 4×7+5= 400?2= 9×9= 36?6= 40?2= 800?4= 72?8= 81?9= 80?4= 5000?5= 78+15= 42+13= 48?2= 500?5= 83,20= 24?3=
400?2= 84?4= 43,30= 24+8= 800?4= 900?9= 9?1= 27,32= 480?2= 400?5= 280+450= 42+13= 4000?2= 27?9= 7?7= 42,6= 8000?4= 53+8= 3600+5800= 7+44=
42?7= 2×8?4= 9×3,8= 18?6= 64,8= 8×9?9= 30?6= 15?3=
21?3= 36?6?3= 36?4= 6?3= 4×8= 9?9×6= 4×5+44= 25?5= 54?9= 42?7×6= 48?8+7= 20?5= 49?7= 96,80+7= 1800+200= 5?5= 42?7= 64,40,8= 93,80= 30?6= 35?7= 40,4+20= 6×5+37= 9?3= 19+41= 7×5,8= 10,8?1= 4×3= 24,6×3= 14?7+25= 7×8= 16?4= 4×8,5= 15?5+8= 73,4= 12?4= 27?3+6= 8×9,8= 3×8?4= 8?2= 56?7,3= 1×2+20= 7×6+10= 24?4= 49?9+7= 16?8+30= 72?8= 4×4= 4×3?2= 7×7+8= 64,8= 20?4=
6?3×7= 54?6+33= 24×0= 24?6= 8?4×3= 510+200= 71,7+30= 2×5= 6×5+37= 15,45?9= 6，2×8= 1×1= 12?4+18= 11,40?8= 35,9= 2×1= 16?4×8= 7+1×8= 70,5×9= 2×2= 8?4+48= 130+80= 8×9+21= 8?2= 25?5+36= 46,8= 3×6= 10?5= 6×8—42= 8×5,7= 18?3= 9?3=
5×6= 12?2= 2×5= 25?5= 1?1= 42?6= 2?2= 20，5= 18?6= 24?3= 5?5= 18?3= 6?1= 2×6= 18?6= 8×6= 2?2= 6×6= 12?6= 39,24= 12?2= 25?5= 12?6= 32?8= 2×7= 12?4= 15?3= 19,7= 15?5= 3×3= 20?4= 12，6= 30?5= 15?5= 30?6= 12?6= 24?6= 33,9= 24?4= 30?6= 16?4= 18?3= 8?4= 15?3= 20?4= 8，72= 10?5= 25?5= 15?3= 3×6= 42?6= 20?5= 10?5= 42,5= 24?3= 24?4= 5?1= 20?5= 20?5= 20?4= 18?6= 50,7= 4?2= 15，6= 30?6= 10?5= 18?3= 36?6= 4×5= 26，7= 12?6= 8，12= 6×3= 9?3= 12?3= 15?5= 4?4= 18，6= 15?5= 27,8= 25?5= 30?5= 16?4= 8?4= 36?6= 20，4= 30?5= 10?2=