小学三位数连加连减240道题
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(1)754-(887-849)= (2)90+171+475= (3)501-(419-403)=
(4)532-394+781= (5)258+(926-223)= (6)608-(918-425)=
(7)367-315+399= (8)647+687-901= (9)699-(870-792)=
(10)742-(613-543)= (11)658-(939-433)= (12)461-(360-290)=
(13)782-594+989= (14)828-213+654= (15)695-(763-142)=
(16)938-(965-334)= (17)324-(862-795)= (18)573+(916-281)=
(19)338-(415-183)= (20)273+(450-149)= (21)996-(938-818)=
(22)98+(891-189)= (23)535-236+628= (24)521+565-684=
(25)791-(828-716)= (26)682-(617-199)= (27)506-(500-396)=
(28)689-167+364= (29)857-396+422= (30)975-(927-864)=
(31)244-(298-257)= (32)329-281+840= (33)923-(429-167)=
(34)655-(991-970)= (35)806-(738-384)= (36)564-116+324=
(37)289+(849-257)= (38)926-(931-369)= (39)372-306+908=
(40)225-(850-741)= (41)620-427+435= (42)807-(500-461)=
(43)950-421+642= (44)860-(920-685)= (45)240-(384-145)=
(46)448-358+965= (47)184+(948-723)= (48)147+(471-274)=
(49)308+698-868= (50)890-571+582= (51)811-671+880=
(52)935-(737-391)= (53)505+(830-195)= (54)335-(898-604)=
(55)109+205+924= (56)826-(354-233)= (57)554+(938-94)=
(58)364+520-753= (59)812-(530-507)= (60)244-157+762=
(61)727-(901-401)= (62)679-600+660= (63)513-(468-191)=
(64)747-(444-191)= (65)560-(974-635)= (66)928-(663-270)=
(67)104+645-697= (68)939-(803-532)= (69)985-721+816=
(70)442-117+267= (71)549-(862-712)= (72)241+(715-150)=
(73)994-(936-388)= (74)261+(864-288)= (75)187-(785-686)=
(76)249+(739-184)= (77)974-121+553= (78)481-480+943=
(79)909-770+805= (80)249+(624-108)= (81)554+(937-294)=
(82)849-337+354= (83)379+433+935= (84)684-466+710=
(85)983-(777-223)= (86)701-347+834= (87)224+698-763=
(88)497+716-742= (89)198-(832-727)= (90)730-(530-427)=
(91)219-(446-284)= (92)954-163+676= (93)126+(599-338)=
(94)535-157+370= (95)145+(852-426)= (96)931-(831-430)=
(97)830-116+858= (98)573-(668-563)= (99)660-434+898=
(100)723-(403-258)= (101)581-256+971= (102)444-381+633=
(103)142-(215-126)= (104)355+394-564= (105)357+(865-222)=
(106)991-(928-260)= (107)493-358+682= (108)128-(711-671)=
(109)242-(261-238)= (110)984-(406-371)= (111)786-(173-102)=
(112)805-(654-236)= (113)907-311+472= (114)562-(807-273)=
(115)385+(627-125)= (116)292-(800-524)= (117)199-138+416=
(118)844-585+613= (119)484-444+531= (120)471+505-830=
(121)165+579+753= (122)802-650+712= (123)644-(461-110)=
(124)456-365+953= (125)224+325-459= (126)772-(891-541)=
(127)279+754-788= (128)940-(756-378)= (129)283+(988-225)=
(130)792-(964-765)= (131)952-(502-235)= (132)195+(897-376)=
(133)176-168+561= (134)495-(608-265)= (135)930-261+646=
(136)186+(424-197)= (137)454-(485-375)= (138)358+(930-153)=
(139)751-(552-190)= (140)257+(951-613)= (141)257-158+972=
(142)878-(473-350)= (143)205+289-435= (144)447-(250-171)=
(145)883-251+500= (146)508-146+344= (147)459+(907-303)=
(148)554-(639-485)= (149)817-459+816= (150)546-(237-135)=
(151)289+384-431= (152)260-102+961= (153)702-(879-313)=
(154)660+(907-147)= (155)645-(840-633)= (156)887-438+805=
(157)889-(663-611)= (158)268+548+961= (159)895-(743-219)=
(160)455+(930-387)= (161)328-243+695= (162)618-(817-728)=
(163)492-(671-444)= (164)486-(502-114)= (165)941-(935-539)=
(166)94+597+917= (167)312-(686-569)= (168)960-413+489=
(169)880-160+672= (170)744-(951-343)= (171)942-(506-231)=
(172)993-(747-524)= (173)181+(895-343)= (174)295+767-836=
(175)563-(917-435)= (176)208-107+818= (177)815-(773-688)=
(178)225+630+995= (179)332+(809-125)= (180)623-(618-160)=