文档介绍：
(1)396÷3÷2 (2)25×8÷4 (3)985-168÷4 (4)648+480÷3
(5)124-735÷7 (6)(22+34)÷8 (7)45÷(15÷3) (8)(601-246)÷5
(9)205+7×8 (10)62-(25-7) (11)32×4+72 (12)305×3-154
(13)96×4+80 (14)120-800÷10 (15)57×8-406 (16)99×2+3
(17)615×3+7 (18)45×9-335 (19)8×37+460 (20)123+377×2
(1)150×30÷5 (2)650+25×8 (3)210-50×3 (4)6012÷(200-194)
(5)360÷(20-5) (6)625÷(15÷3) (7)681+27×4 (8)23+253×4
(9)720÷(15-3×2)(10)(108+54)×5 (11)45+165÷3 (12)44×12+28
(13)550÷11+80 (14)368+35×11 (15)252÷6+35 (16)48÷(2+6)
(17)672÷(3×25-73)(18)703-24×25 (19)23×46÷2 (20)93×(515-428)
(1)(69+21)×9 (2)(10+25)×44 (3)234÷(205-199) (4)(75+315)÷5
(5)100÷25÷4 (6)135-75÷5 (7)182÷13+34 (8)120÷(30-6)
(9)196+24×18 (10)466+14×2 (11)(205-198)×4 (12)240×3-154
(13)203-135÷9 (14)(124-85)×12 (15)45÷9×24 (16)(270-180)÷30
(17)28+120×8 (18)4500-24×12 (19)26×4-125÷5 (20)860-20×30
(1)987÷3×2 (2)291×4×5 (3)555×7×4 (4)78×3÷9
(5)1005÷5÷3 (6)996÷6×2 (7)256×7×5 (8)150×4÷5
(9)726+247×3 (10)4176÷3÷3 (11)1912×3÷4 (12)328+16×3
(13)6024÷3÷4 (14)280×5÷4 (15)718-75×8 (16)(187-24)×5
(17)615-74×8 (18)275×6÷3 (19)5×(399-214) (20)(582+6467)÷7
(1)424×3×2 (2)328+172×6 (3)347×4-192 (4)34+306×2
(5)451+549÷3 (6)37×100-37 (7)6×25+75×6 (8)720÷5-80
(9)4×38-12 (10)257×4÷2 (11)345+255÷5 (12)567×2×5
(13)369×4÷3 (14)45×9+55×9 (15)198-98×2 (16)(741-159)÷6
(17)405÷9×3 (18)(321-39)÷6 (19)84×7+84÷7 (20)630+322×2
(1)7×(34+56) (2)125×2×5 (3)985-57×9 (4)(65+16)÷9
(5)230×(140-132) (6)(2534-958)÷8 (7)792×7÷9 (8)708-35×20
(9)(120-103)×50 (10)50+160÷4 (11)493+25×7 (12)(95-95)×74
(13)78×7+80 (14)(532-391)×6 (15)1208-230×5 (16)700-57×9
(17)615×9+77 (18)792×7÷9 (19)4280÷(19-11) (20)(2534-958)÷8
(1)360÷24×8 (2)280×8+650 (3)64×21÷28 (4)(36+64)×65
(5)284+16×8 (6)(284+16)×8 (7)(58+37)×5 (8)120-36×2
(9)26×4+221 (10)147+72×8 (11)202+36×9 (12)305×3+666
(13)96×5+775 (14)921-7×4 (15)770÷7+65 (16)640×2+396
(17)434+25×5 (18)505×(400-396) (19)670+72×9 (20)(960