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简便方法计算强化训练题
158+262+138
=
=
=
= 375+219+381+225
=
=
=
= (181+2564)+2719
=
=
=
= 378+44+114+242+222
=
=
=
= 276+228+353+219
=
=
=
= (375+1034)+(966+125)
=
=
=
= (2130+783+270)+1017
=
=
=
= 2214+638+286
=
=
=
= 99+999+9999+99999
=
=
=
= 899+344
=
=
=
= 89+101+111
=
=
=
= 3999+498
=
=
=
= 278+463+22+37
=
=
=
= 732+580+268
=
=
=
= 1034+780320+102
=
=
=
= (181+2564)+2719
=
=
=
= 425+14+186
=
=
=
= 368+2649+1351
=
=
=
= 24+127+476+573
=
=
=
= 999+999+999(两法)
=
=
=
= (78+61)+39
=
=
=
= 3000-999
=
=
=
= 400-273-127
=
=
=
= 442-103-142
=
=
=
= 901-99
=
=
=
= 5001-247-1021-232
=
=
=
= 7755-(2187+755)
=
=
=
= 3065-738-1065
=
=
=
= 497-299
=
=
=
= 2357-183-317-357
=
=
=
= 2365-1086-214
=
=
=
= 1883-398
=
=
=
= 2356-(1356-721)
=
=
=
= 1235-(1780-1665)
=
=
=
= 273-73-27
=
=
=
= 2100-728-772
=
=
=
= 847-527-273
=
=
=
= 1200-624-76
=
=
=
= 455-(155+230)
=
=
=
= 214-(86+14)
=
=
=
= 787-(87-29)
=
=
=
= 365-(65+118)
=
=
=
= 576-285+85
=
=
=
= 825-657+57
=
=
=
= 690-177+77
=
=
=
= 968-599
=
=
=
= 363-199
=
=
=
= 442-103-142
=
=
=
= 400-273-127
=
=
=
= 2356-(1356-721)
=
=
=
= 327+(96-127)
=
=
=
= 700-82-18
=
=
=
= 327+(96-127)
=
=
=
= 374-205+226-95
=
=
=
= (78+61)+39
=
=
=
= 374-205+226-95
=
=
=
= 1235-(1780-1665)
=
=
=
= 12×25
=
=
=
= 88×125(两法)
=
=
=
= 75×24
=
=
=
= 138×25×4
=
=
=
= (13×125)×(3×8)
=
=
=
= 25×32×125
=
=
=
= 50×(34×4)×3
=
=
=
= 125×32×8
=
=
=
= 72×125
=
=
=
= 72×125
=
=
=
= 25×(78×4)
=
=
=
= 67×5×2
=
=
=
= 125×64
=
=
=
= 125×25×8×4
=
=
=
= 25×(78×4)
=
=
=
= 67×5×2
=
=
=
= 25×36(两法)
=
=
=
= 99+49×99
=
=
=
= 75×102
=
=
=
= 901×999
=
=
=
= 354×99+354
=
=
=
= 72×98
=
=
=
= 62×4+44×5+5×18
=
=
=
= 454+999×999+545
=
=
=
= (12+24+80)×50
=
=
=
= 32×(25+125)
=
=
=
= 84×36+64×84
=
=
=
= 102×76
=
=
=
= 58×98
=
=
=
= 178×101-178
=
=
=
= 79×42+79+79×57
=
=
=
= 75×99+2×75
=
=
=
= 83×102-83×2
=
=
=
= 98×199
=
=
=
= 178×99+178
=
=
=
= 25×(24+16)
=
=
=
= 4×(25×65+25×28)
=
=
=
= 75×27+19×25
=
=
=
= 99×64
=
=
=
= 84×101
=
=
=
= (300+6)×12
=
=
=
= 25×(4+8)
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