精品文档
.
(1)(457+28×14)×5 (2)(480+20×4)÷20 (3)180+60÷5×6
(4)1721-36×(432-408) (5)420-(25+15)×4 (6)8×(28+18÷15)
(7)(230-215÷5)×16 (8)(160+880÷20)×4 (9)(90-21×2)÷12
(10)70+(750-65×11) (11)(800÷20+36)×12 (12)360÷9÷8+16
(13)1080-3500÷50+346 (14)(300÷15-11)×12 (15) 3500-(124+76)×16
精品文档
.
(16)480-(80+20)÷4 (17) (24+36)÷12×14 (18)(86-24)×5÷31
(19)(60-12×4)×15 (20)720+320÷16×7 (21)(328+198÷9)÷70
(22)65+260÷4×98 (23)(73+22)÷(72-67) (24)36×5÷(27-17)
(25)3200÷(1280-72×15) (26)(457+28×14)×5 (27)280÷(240-8×25)
(28)30+(96-24×3)×6 (29)350-5×3÷5 (30) (365-328)×(73-55)
精品文档
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(58+37)÷(64-9×5) 19+(253-22)÷21 (23+23)×24-597
85+14×(14+208÷26) 21+(327-23)÷19 539-513÷(378÷14)
(110-10)÷10-10 304-275÷(275÷25) (70+10)÷(18-10)
44+15×16-32 (10-100÷10)×11 (53-588÷21)×36
(247+18)×27÷25 36-720÷(360÷18) (70+203÷7)×28