(1)(90-21×2)÷12 (2)70+(750-65×11) (3)235+49+65+11
(4)(4800÷75+36)×12 (5)360÷9÷8+16 (6)50-[(45+35)÷100 ]
(7)1080-3500÷250+346
(10)(487+2884÷28)×50
(13)350-5×3÷5
(16)(60-12×4)×15
(19)315+43+30×6
(22)(638+8182)÷(184-100)
(25)50-[(45+35)÷5] (26)35 (8)2010÷15-11×12 (9)108 (11)200×73÷(543-178) (12)619 (14)480-(80+20)÷4 (15)169 (17)720+320÷16×7 (18)125 (20)420-(25+15)×4 (21)4-(32+320÷4) (24)(123×181-35×81 ×125 -[58-(18+3)] -(85+35)÷12 ×51×8 ×[7×25-(25+13)] +137)÷20+13 (27)125×7+300
6
(23)480

