(251)101×16,
(252)125×5×8×2,
(253)39+144+61,
(254)27×4×5,
(255)857﹣318﹣182,
(256)25×77﹣37×25,
(257)125×7×32,
(258)124+38+76+62,
(259)222﹣56﹣44,
(260)16×125,
(261)534+262+66+138,
(262)99×165+165,
(263)29×8×125,
(264)8×(125+12),
(265)1428﹣544﹣456,
(266)250×60,
(267)630÷35÷2,
(268)125×16,
(269)800÷32,
(270)25×36,
(271)810÷54,
(272)55×14,
整数简便运算---
9
(273)179+54+321,
(274)13×14×125×2,
(275)1525﹣31+75﹣49,
(276)115×23﹣23×15,
(277)23×199+23,
(278)72×5+72×4+72,
(279)34×72+34×28,
(280)203×99,
(281)(80+4)×25,
(282)125×7×8,
(283)27×45+55×27,
(284)728﹣155﹣328,
(285)463+342+158,
(286)873﹣322+278,
(287)1234﹣773﹣327,
(288)111×9+111,
(289)25×294×4,
(290)4000÷125÷8,
(291)18×45+18×55,
(292)239+144+61
(293)728﹣155﹣328,
(294)463+342+158,
(295)873﹣322+278,
(296)1234﹣773﹣327,
(297)111×9+111,
(298)24×125,
(299)114+48+86+52,
(300)469×5×2,
(301)720÷15÷4,
(302)3288﹣1999+212,
(303)769×101﹣769,
(304)39000÷60÷50,
(305)96×125×7×24,
整数简便运算---
10
(306)1795+376+624﹣595,
(307)102×79﹣79×2,
(308)25×404,
(309)628﹣46+454,
(310)(80﹣1)×125,
(311)(49+49+49+49)×250,
(312)45×54+45×45+45,
(313)324+67+76,
(314)34×27+66×27,
(315)99×52+52,
(316)(125+9)×8,
(317)3.27+6.4+2.73+4.6,
(318)3200÷25÷4,
(319)137×13+137×6+137,
(320)450×34+45×660
(321)827﹣98﹣102,
(322)378+169+22,
(323)475﹣197,
(324)188+97+12,
(325)235+36+45,
(326)372+89+38,
(327)464+28+36,
(328)597+24+3,
(329)682﹣55﹣27,
(330)725×23×4,
(331)8125×16,
(333)932×25×25,
(334)325+325+325+324,
(335)125×24,
(336)1200÷25,
(337)908×11﹣908,
(338)329×99+329,
(339)12150÷45﹣7650÷45,
整数简便运算---
11
(340)27+979+1973+9021,
(341)1358-(442+358)+622,
(342)25×58+25+25×41,
(343)101×15+358,
(344)104×45÷52,
(345)25×(40×6),
(346)532×76÷38,
(347)173×8÷173×8,
(348)28×25+375÷25,
(349)4260÷60×104,
(350)796×3+584,
(351)25×319×4,
(352)99×52,
(353)250×28,
(354)630÷35÷2,
(355)52×72+52×29﹣52,
(356)243+26+274,
(357)35.24﹣(15.24+8.16),
(358)354﹣99,
(359)83×5+83×2+83×3,
(360)43×202,
(361)185×38+15×38,
(362)160×25,
(363)420÷[(205﹣198)×4],
(364)96×101﹣96,
(365)2000﹣586﹣114,
(366)55×25+25×45,
(367)(40+4)×25,
(368)540÷12÷5,
(369)77×13﹣13×27,
(370)104×32,
(371)282+142+158,
(372)577+204,
整数简便运算---
12
(373)45×14,
(374)78×99,
(375)542﹣199+99,
(376)65+99×65,
(377)470÷(5×47),
(378)1621﹣(312+621)﹣688,
(379)1185+1733+115+3267,
(380)101×99,
(381)4920÷24+3250÷125,
(382)24×57+43×24,
(383)36+42+64+158,