整数简便运算专项练习题

1、整数简便运算专项练习600题（有答案）(1)25X125X4X8,(11)2008X99+2008,(21)41000+(41X5),(2)2005X2004+4,(12)77-75+23-25,(22)4200+25,(3)55X66+(11X11),(13)125X88,(23)280X36-360X18,(4)25X(19+19+19+19),(14)2011X99+2011,(24)5400+(50X27),(5)99X99+99,(15)49-75+151-25,(25)45X45+45X55(6)37X39-29X37,(16)(125+9)X8,(26)37X41-37(7)18

2、+27+6X27,(17)3.67X25X4,(27)162+89-62(8)586X124+29X586-586X53,(18)28+531+72+469,(28)71X25+71X76,(9)28X5+2X4X35+21X20+14X40+8X62,(19)49X102-2X49,(29)125X32X25,(10)125X32,(20)833-243-457,(30)398+167+102+333,(31)1400-386-614,(42)257-65+43+165,(53)25X62X4,(32)794-198,(43)32X25X125,(54)125X88,(33)68X25,(4

3、4)384+196+216+104,(55)17X243+17X56+17,(34)6756-193-207,(45)8X(125+25)X4,(56)25X32X125,(35)72X125,(46)78X57-78+78X43,(57)125X32X25,(36)97X360+3X360,(47)(6+8)X125(58)132X77+22X132+132,(37)44X25,(48)726+53+74-353(59)1139-(350+139),(38)1000-525+125,(49)735-248-152(60)1170+9+13,(39)402-27+198,(50)4500+4+

4、25(61)98+376+2,(40)39+261+61,(51)32X27+73X32,(62)25X97X4,(41)2010X9+2010,(52)1260-432-568,(63)137X38+63X38,(64)300+25+4,(65)23X32+68X23,(76)415-176-24,(65)125X(80+8),(66)25X204,(77)829+37+71+63,(57)872-354-246,(67)56X32-46X32,(78)125X89X8,(57)25X64X4,(68)8+2-8+2,(79)428X78+572X78,(58)72X102-2X72,(69

5、)25X4+25X4,(80)101X92-92,(59)1002-5+98,(70)726-(526-150),(81)907X99+907,(60)569+68+132+31,(71)286+198,(82)274+299+201+326,(61)38X25X4,(72)314-202,(83)65X99+65,(62)2300-165-35,(73)526+301,(84)38X42+38X58(63)125X(8+4),(74)223-99,(85)415-176-24,(64)3200+25+4,(75)98X58+58+58,(86)829+37+71+63,(87)(87)125

6、X89X8,(98)154-(54+98),(109)(125+7)X8,(88)428X78+572X78,(99)37X64+37X136,(110)327+64+273+46,(89)250+255+260+265+270,(100)216+305,(111)645-58-142,(90)1041-(41+328),(101)25X32,(112)332X4+68X4,(91)125X54-46X125,(102)47+236+64,(113)135-87+65-13,(92)99+99X99,(103)6X(15X9),(114)15X4X25,(93)329-186-14,(104)

7、402+539,(115)1992+144-992,(94)25X37X4,(105)43+78+122+257,(116)78X101,(95)720+16+5,(106)25X(26X4),(117)69+11-69+11,(96)403-198-2,(107)25X44,(118)25X64X125(97)76+149+24,(108)354+(229+46),(119)107X73-7X73(120)39X101,(131)88X125,(142)25X137X4,(121)75X299+75,(132)720+16+5,(143)38X101,(122)720+16+5,(133)3

8、17X15-17X15,(144)68X200X25,(123)456+328+672+44,(134)(125+7)X8,(145)101X87-87,(124)57X101,(135)3200+25+4,(146)56X67+33X56,(125)87X99+87,(136)327+64+273+46,(147)9+498+102+211,(126)84X72+84X29+84,(137)639-58-142,(148)1305+1238-405,(127)6240-3885-1115,(138)25X137X40,(149)2452-(75+452),(128)25X13X4,(139)

9、4200-1934-1066,(150)245-65-35,(129)99X36+36,(140)290X54+29X460,(151)186+82+18,(130)351+188+12,(141)46X102+308,(152)25X(4X97),(153)8X(25+20),(164)6958+1998,(175)109+127+73,(154)24X56+44X24,(165)(81+108)+27,(176)608-154-146,(155)700+4+25,(166)3254-599-254,(177)165-97,(156)39X49+39X51,(167)26X8X125,(17

10、8)258+98,(157)108X25,(168)4200+15+2,(179)109+127+73,(158)25X125X2X4,(169)25X33X4,(180)608-154-146,(159)56X99+56,(170)25X29X4,(181)165-97,(160)124X75-124X72-124X2,(171)598X101,(182)258+98,(161)104X39-39X4,(172)125乂48,(183)36X64-64+64X65,(162)28X99+28(173)105X32,(184)24X125X7,(163)(125X39)X8(174)4X43X

11、25,(185)25X(24+8)X125,(186)438-298,(197)520-425-75,(208)700-296-104,(187)25X37X8,(198)8X(11X125),(209)45+99X99+54,(188)4800+16+5,(199)525X99+525,(210)8X4X(125+25),(189)816-285-15,(200)3900+25+4,(211)25X(4X40),(190)37X101-37,(201)275+364+636+725,(212)47X16+63X16,(191)2563-79+437,(202)1578-(61+578)-13

12、9,(213)201X42-42,(192)768-273-27(203)9999X2010+2010(214)6854-(893+854+107),(193)165+247+135(204)456+123+544+877(215)28X19X25,(194)198+355(205)225X48+775X48(216)327X99,(195)243-(43+26)(206)25X33X4X2,(217)54000+8+125,(196)45+63+37+55,(207)156+62-156+62,(218)194+59+41+106,(219)383-(183+29),(230)278+598

13、+122,(241)1126-637-463,(220)24X125,(231)647-289-111,(241)(101-98)X44+12,(221)156+45-55,(232)287+198,(242)43X99+43(222)1300+25+4,(233)357+256+1000,(243)1270-538-462(223)5127-866-134,(234)49X102-2X49,(244)577+492+423+508(224)75+127+25+63,(235)1563+254+437+746,(245)48X125(225)363X7+237X7,(236)25X64X125

14、,(246)32000+125(226)4300+25+4,(237)43000+(43X5),(247)107+538+462(227)25X7X44,(238)1736+28+1064+28,(248)54X45+45+45X45(228)327+64+273+46,(239)168X25X4,(249)125X(25X32)(229)750-326-144,(240)32X87+13X32,(250)153X43+43X47,(251)101X16,(262)99X165+165,(273)179+54+321,(252)125X5X8X2,(263)29X8X125,(274)13X1

15、4X125X2,(253)39+144+61,(264)8X(125+12),(275)1525-31+75-49,(254)27X4X5,(265)1428-544-456,(276)115X23-23X15,(255)857-318-182,(266)250X60,(277)23X199+23,(256)25X77-37X25,(267)630+35+2,(278)72X5+72X4+72,(257)125X7X32,(268)125X16,(279)34X72+34X28,(258)124+38+76+62,(269)800+32,(280)203X99,(259)222-56-44,(

16、270)25X36,(281)(80+4)X25,(260)16X125,(271)810+54,(282)125X7X8,(261)534+262+66+138,(272)55X14,(283)27X45+55X27,(284)728-155-328,(295)873-322+278,(306)1795+376+624-595,(285)463+342+158,(296)1234-773-327,(307)102X79-79X2,(286)873-322+278,(297)111X9+111,(308)25X404,(287)1234-773-327,(298)24X125,(309)628

17、-46+454,(288)111X9+111,(299)114+48+86+52,(310)(80-1)X125,(289)25X294X4,(300)469X5X2,(311)(49+49+49+49)X250,(290)4000+125+8,(301)720+15+4,(312)45X54+45X45+45,(291)18X45+18X55,(302)3288-1999+212,(313)324+67+76,(292)239+144+61(303)769X101-769,(314)34X27+66X27,(293)728-155-328,(304)39000+60+50,(315)99X5

18、2+52,(294)463+342+158,(305)96X125X7X24,(316)(125+9)X8,3.27+6.4+2.73+4.6,(328)597+24+3,(340)27+979+1973+9021,3200+25+4,329682-55-27,3411358-(442+358)+622,137X13+137X6+137,330725X23X4,34225X58+25+25X41,450X34+45X6603318125X16,343101X15+358,827-98-102,333932X25X25,344104X45+52,378+169+22,334325+325+325

19、+324,34525X(40X6),475-197,(335)125X24,346)532X76+38,188+97+12,(336)1200+25,(347)173X8+173X8,235+36+45,337)908X11-908,348)28X25+375+25,372+89+38,(338)329X99+329,(349)4260+60X104,464+28+36,339)12150+45-7650+45,350)796X3+584,(317)(318)319320321322323(324)(325)(326)(327)(351)25X319X4,(362)160X25,(373)45

20、X14,(352)99X52,(363)420+(205-198)X4,(374)78X99,(353)250X28,(364)96X101-96,(375)542-199+99,(354)630+35+2,(365)2000-586-114,(376)65+99X65,(355)52X72+52X29-52,(366)55X25+25X45,(377)470+(5X47),(356)243+26+274,(367)(40+4)X25,(378)1621-(312+621)-688,(357)35.24-(15.24+8.16),(368)540+12+5,(379)1185+1733+115

21、+3267,(358)354-99,(369)77X13-13X27,(380)101X99,(359)83X5+83X2+83X3,(370)104X32,(381)4920+24+3250+125,(360)43X202,(371)282+142+158,(382)24X57+43X24,(361)185X38+15X38,(372)577+204,(383)36+42+64+158,(384)1600-217-483,(395)3000+125,(406)32X202,(385)163X8+137X8,(396)800+25,(407)285X38+15X38,(386)4200+25+

22、4,(397)(125X25)X8,(408)120X25,(387)100-28+72,(398)57X15+42X15+15,(409)490+(215-208)X4,(388)200-28X5,(399)373+733+627,(410)95X101-95,(389)297-28-72,(400)623-187-213+377,(411)7614-(2164+871),(390)4X89X25,(401)98+99X98,(412)578+(791+422)+309,(391)78+99+22,(402)102X36,(413)24X125X7,(392)900+25+4,(403)27

23、6+428+124+572,(414)536X64-64-64X35,(393)329X101,(404)375+(25-10)X15,(415)25X99X4,(394)54X98+46X98,(405)125X43-25X43,(416)121+131+141+151+161+171+181,(417)(418)(419)(420)(421)(422)(423)424(425)(426)42741+127+59+173,(80-1)X125,(428)1300+25+4,(440)25X32,45X54+45X45+45,(429)156乂101-156,(441)8X48X125,(54

24、3+543+543+543)X25,(430)25X71X4,(442)5400+45+2,2300-165-35,(431)135X99,(443)360+45,25X204,(432)49X99+49,(444)148X8+152X8,125X(8+4),(433)5620+(562X5),(445)99X34,3700+25+4,(434)37+125+63+175,(446)25X201-25,56X32-46X32,(435)(447)1268+227+473+132,99X78+78,(436)202X12-24,125X103-125X3,(437)2700-425-175,28

25、5+195+105+415,(448)789-511-89,125X88,(439)(449)735-238-162,(438)643-48-12-40,(449)735-238-162,(450)356+83+144,(461)567+142+558,(472)5927-(458+627),(451)53X99,(462)546-378-162,(473)3752-698,(452)199X39+39,(463)1458+999,(474)2000-586-114(453)7826-(826-1300),(464)796+643-596,(475)67X101-67(454)87X99+87

26、,(465)475-303,(476)125X48(455)125X88,(466)265+318+35,(477)34X126+37X73+37(456)54X102,(467)25X387X4,(478)85+137+63+215,(457)125X(4+8),(468)264+(37+136)+163,(479)885-(301-115),(458)36X111+888X8,(469)76X102,(480)40X(25+125),(459)65X34+34X34+34,(470)56X38+38+43X38,(481)99X123,(460)25X13X4,(471)2358+998,

27、(482)64X125,(493)(493)230X24+240X77,(504)25X33X4,(515)771-169+229-431,(483)79999+7999+799+79,(494)46X101-146,(505)(125+70)X8,(484)630+45,(495)(841-41)+25X4,(506)101X87,(485)168X68+33X168-168,(496)135+39+55+61,(507)312X4+188X4,(486)126X72,(497)45X201,(508)28X225-2X225-6X225,487)875+659+125(498)2000+2

28、5+8,(509)389+327+211(488)813-256-344(499)17X43-43X7,(510)608-154-146(489)77+649-649(500)278-122-78,(511)587-98(490)99X7+7(501)2000+125+8,(512)125X53X80,(491)459X802+197X459+459,(502)800-138-162,(513)150+(140X8-252),(492)125X(8X2)+100,(503)99X38+38,(514)178X78-78X78,(516)25X19X4,(527)538-(461+38),(53

29、8)1300+25+4,(517)(25X125)X(8X40),(528)125X48,(539)37+125+63+175,(518)125X8X8,(529)1300+25+4,(540)28X37+73X37-37,(519)35X39+65X39,(530)237-125+163-175,(541)(300-1456+26)X32,(520)45X(200+2),(531)156X101-156,(542)8X(29X125),(521)125X32,(532)78X103,(543)99X101,(522)195X115-195X15,(533)25X36X11,(544)27X4

30、8+27X52,(523)25+75-25+75,(534)14X37+63X14,(545)125X25X4X8,(524)99X38+38,(535)(25+125)X8,(546)125X(296X80),(525)3200+4+25,(536)5X4X20X25,(547)33X33+99X89,(526)273-73-27,(537)168-52-48,(548)560+7+8,(549)88X201-88,(560)156X101-156,(571)156X101-156,(550)36X7+36X乙(561)49X99+49,(572)164-83-17,(551)1300+25

31、+4,(562)5787-329-1071,(573)26X148-48X26,(552)32X(25X125),(563)52X11+11X18,(573)600+25+4,(553)32+155+68+145,(564)912+88-512,(574)83X29+71X83,(554)201X16,(565)376+28+172+124,(575)199+199X99,(555)125X103-125X3,(566)43000+8+125,(576)560+(56+9),(556)2700-425-175,(567)99X38+38,(577)101X99,(557)125X44,(568

32、)25X104,(578)28X37+73X37-37,(558)41+127+59+173,(569)8X(29X125),(579)7820-375-625,(559)2300+25+4,(570)688-534+112-166,(580)25X33X4,(581)329+753+571+47,(581)329+753+571+47,(589)1200+25+4,(597)27+979+1973+9021,(582)75+47X3,(590)41+127+59+173,(598)3291+599-898,(583)2500+4+25,(591)156X83+156X17,(599)833-

33、243-457,(584)(16+24)X35+70,(592)25X73X4,(600)199X47+47,(585)875+209+191-75,(593)745-179-21,(586)57X43+33X43,(594)125X66X8,(587)25X103-125X3,(595)7200+45+2,(588)2700-425-175,(588)2700-425-175,(596)1600-704-275-225-296=99X100,=99X100,=9900;(6)37X39-29X37,=37X(39-29),=37X10,=370;(7)18+27+6X27,=18+6X(27

34、+27)=3X1,=3；(8)586X124+29X586-586X53,参考答案：25X125X4X8,=(25X4)X(125X8),=100X1000,=100000.2005X2004+4,=2005X(2004+4),=2005X501,=2005X500+2005,=1002500+2005=1004505.55X66+(11X11),=55X66+11+11,=(55+11)X(66+11),=5X6,=30;25X(19+19+19+19),=25X(19X4),=25X4X19,=10X19,=19099X99+99,=99X(99+1),=(124+29-53)X586,=

35、100+1000,=100000;=100X586,=1100;(30)398+167+102+333,=58600;(19)49X102-2X49,=(398+102)+(167+333),(9)28X5+2X4X35+21X20+14X=49X(102-2),=500+500，40+8X62,=49X100,=1000;=28X5+2X4X7X5+3X7X4X=4900;(31)1400-386-614,5+14X2X20+8X62,(20)833-243-457,=1400-(386+614),=28X5+28X10+28X15+28X20+8=833-(243+457),=1400-1

36、000,X62,=833-700,=400.=28X(5+10+15+20)+8X62,=133;(32)794-198,=28X50+8X62,(21)41000+(41X5),=794-200+2,=1400+496，=(41000+41)-5,=594+2=1896;=1000+5,=596;(10)125X32,=200;(33)68X25,=125X(8X4),(22)4200+25,=17X4X25,=125X8X4,=4200+(5X5),=17X(4X25),=1000X4,=4200+5+5,=17X100,=4000;=840+5,=1700;(11)2008X99+200

37、8,=168;(34)6756-193-207,=2008X(99+1),(23)280X36-360X18,=6756-(193+207),=2008X100,=280X36-36X180,=6756-400,=200800;=(280-180)X36,=6356;(12)77-75+23-25,=100X36,(35)72X125,=(77+23)-(75+25),=3600;=9X8X125,=100-100,(24)5400+(50X27),=9X(8X125),=0;=5400+50+27,=9X1000,(13)125X88,=5400+27+50,=9000;=125X(8X11

38、),=200+50,(36)97X360+3X360,=125X8X11,=4；=360X(97+3),=1000X11,(25)45X45+45X55=360 x100,=11000;=(45+55)X45,=36000(14)2011X99+2011,=100X45,(37)44X25,=2011X(99+1),=4500;=(11X4)X25,=2011X100,(26)37X41-37=11X(4X25),=201100;=(41-1)X37,=11X100,(15)49-75+151-25,=40乂37,=1100;=(49+151)-(75+25),=1480;(38)1000-5

39、25+125,=200-100,(27)162+89-62=1000-(525-125),=100;=162-62+89,=600(16)(125+9)X8,=189(39)402-27+198,=125X8+9X8,(28)71X25+71X76,=(402+198)-27=1000+72，=71X(25+76),=600-27=1072;=71X101,=573(17)3.67X25X4,=71X(100+1),(40)39+261+61,=3.67X(25X4),=71X100+71X1,=39+61+261,=367X100,=7100+71=100+261，=36700;=7171;

40、=361;(18)28+531+72+469,(29)125X32X25,(41)2010X9+2010,=(28+72)+(531+469),=(125X8)X(4X25),=1000X100,(64)300-25-4,=300-(64)300-25-4,=300-(25X4),=300-100,=3；(65)125X(80+8),=125X80+125X8,=10000+1000,=11000;(57)872-354-246,=872-(354+246),=872-600,=272;(57)25X64X4,=25X4X64,=100X64,=6400;(58)72X102-2X72,=72

41、X(102-2),=72X100,=7200;(59)1002-5+98,=1002+98-5,=1100-5,=1095.(60)569+68+132+31,=(569+31)+(68+132),=600+200,=800;(61)38X25X4,=38X(25X4),=38X100,=3800;(62)2300-165-35,=2300-(165+35),=2300-200,=2100;(63)125X(8+4),=125X8+125X4,=1000+500,=1500;(64)3200-25-4,=3200-(25X4),=3200-100,=32;(65)23X32+68X23,=23

42、X(32+68),=23X100,=2300;(66)25X204,=201OX(9+1),=201OX10,=20100;257-65+43+165,=(257+43)+(165-65),=300+100,=400;32X25X125,=8X4X25X125,=(4X25)X(125X8),=100X1000,=100000;384+196+216+104,=(384+216)+(196+104),=600+300,=900;8X(125+25)X4,=125X8X4+25X4X8,=4000+800,=4800;78X57-78+78X43,=78X(57+43-1),=78X(100-1

43、)=78X100-78X1,=7800-78,=7722;(6+8)X125=6X125+8X125,=750+1000.=1750;726+53+74-353=726+74+53-353,=800-(353-53),=800-300=500;735-248-152=735-(248+152),=735-400,=335;4500-4-25=4500-(4X25),=4500-100,=45.32X27+73X32,=(27+73)X32,=100X32,=3200;1260-432-568,=1260-(432+568),=1260-1000,=26025X62X4,=(25X4)X62,=

44、100X62,=6200;125X88,=125X8X11,=1000X11,=11000.17X243+17X56+17,=17X(243+56+1),=17X300,=5100.25X32X125,=25X(4X8)X125,=(25X4)X(125X8),=100X1000,=100000;125X32X25,=125X8X4X25,=(125X8)X(4X25),=1000X100,=100000;132X77+22X132+132,=132X(77+22+I),=132X100,=13200;1139-(350+139),=1139-350-139,=1139-139-350,=10

45、00-350,=650;1170-9-13,=1170-(9X13),=1170-117,=1098+376+2,=(98+2)+376,=100+376,=476;25X97X4,=(25X4)X9乙=100X97,=9700;137X38+63X38,=(137+63)X38,=200X38,=7600;-328,-328,=25X=25X(200+4),=25X200+25X4,=5000+100,=5100;(67)56X32-46X32,=(56-46)X32,=10X32,=320.(68)8+2-8+2,=10-8+2,=2+2,=4；(69)25X4-25X4,=100-25X

46、4,=4X4,=16;(70)726-(526-150),=726-526+150,=200+150,=350;(71)286+198,=286+200-2,=486-2,=484;(72)314-202,=314-2002,=114-2,=112;(73)526+301,=526+300+1,=826+1,=827;(74)223-99,=223-100+1,=123+1,=124;(75)98X58+58+58,=(98+1+1)X58,=100X58,=5800.(76)415-176-24,=415-(176+24),=415-200,=215;(77)829+37+71+63,=(8

47、29+71)+(63+37),=900+100,=1000;(78)125X89X8,=1000-328,=672;125X54-46X125,=125X(54-46),=125X8,=1000;99+99X99,=99X(1+99),=99X100,=9900329-186-14,=329-(186+14),=329-200,=129;25X37X4,=(25X4)X3乙=100X37,=3700;720+16+5,=720-(16X5),=720-80,=9.403-198-2,=403-(198+2),=403-200,=203;76+149+24,=(76+24)+149,=100+1

48、49,=249;154-(54+98),=154-54-98,=(154-54)-98,=100-98,=237X64+37X136,=37X(64+136),=37X200,=7400;216+305,=200+16+300+5,=200+300+16+5,=500+21,=521;25X32,=25X4X8,=800;47+236+64,=47+(64+236),=125X8X89,=1000X89,=89000;428X78+572X78,=(428+572)X78,=1000X78,=78000101X92-92,=(101-1)X92,=100X92,=9200;907X99+907

49、,=(99+1)X90乙=100X90乙=90700;274+299+201+326,=(274+326)+(299+201),=600+500,=1100;65X99+65,=(99+1)X65,=100X65,=6500;38X42+38X58=(42+58)X38,=100X38,=3800;415-176-24,=415-(176+24),=415-200,=215;829+37+71+63,=(829+71)+(37+63),=900+100,=1000;125X89X8,=125X8X89,=1000X89,=89000;428X78+572X78,=(428+572)X78,=1

50、000X78,=78000.250+255+260+265+270,=250+(255+265)+(260+270),=250+520+530,=1300.1041-(41+328),=1041-41=47+300,=347;6X(15X9),=6X15X9,=90X9,=810;402+539,=400+(2+539),=400+541,=941;43+78+122+257,=(43+257)+(78+122),=300+200,=500;25X(26X4),=25X4X26,=100X26,=2600;25X44,=25X4X11,=100 x11,=1100;354+(229+46),=

51、354+46+229,=400+229,=629(125+7)X8,=125X8+7X8,=1000+56,=1056;327+64+273+46,=(327+273)+(64+46),=600+110,=710;645-58-142,=645-(58+142),=645-200,=445;332X4+68X4,=(332+68)X4,=400X4,=1600;135-87+65-13,=(135+65)-(87+13),=200-100,=100;15X4X25,=15X(4X25),=15X100,=1500;1992+144-992,=(1992-992)+144,=1000+144,=

52、1144;78X101,=78X100+78X1,=7878;69+11-69+11,=(69-69)+(11+11),=0+22,=22.25X64X125=25X4X2X8X125;=(25X4)X2X(8X125),=100X2X1000,=200000;107X73-7X73=(107-7)X73,=100X73,=730039X101,=39X(100+1),=39X100+39,=3939;75X299+75,=75X(299+1),=75X300,=22500;720-16-5,=720-(16X5),=720-80,=9.456+328+672+44,=(456+44)+(32

53、8+672),=500+1000,=1500;57X101,=57X(100+1),=57X100+57X1,=5700+57,=5757;87X99+87,=87X(99+1),=87X100,=8700;84X72+84X29+84,=84X72+84X29+84X1,=84X(72+29+1),=84X102,=8568;6240-3885-1115,=6240-(3885+1115),=6240-5000,=1240;25X13X4,=(25X4)X13,=100X13,=1300;99X36+36,=(99+1)x36,=100X36,=3600;351+188+12,=351+(1

54、88+12),=351+200,=551;88X125,=(80+8)X125,=80X125+8X125,=10000+1000,=11000;720-16-5,=720-(16X5),=720-80,=9；317X15-17X15,=(317-17)X15,=300X15,=4500(125+7)X8,=125X8+7X8,=1000+56,=1056;3200+25+4,=3200-(25X4),=32;327+64+273+46,=(327+273)+(64+46),=600+110,=710;639-58-142,=639-(58+142),=639-200,=439;25X137X

55、40,=25X40X137,=(104-4)=(104-4)X39,=100X39,=3900.(162)28X99+28=(99+1)X28,=100X28,=2800;(163)(125X39)X8=125X8X39,=1000X39,=39000(164)6958+1998,=6958+2000-2,=8958-2,=8956;(165)(81+108)+27,=81-27+108-27,=3+4,=乙(166)3254-599-254,=3254-254-600+1,=3000-600+1,=2400+1,=2401.(167)26X8X125,=26X(8X125),=26X1000

56、,=26000;(168)4200-15-2,=4200-(15X2),=4200-30,=140;(169)25X33X4,=25X4X33,=100X33,=3300.(170)25X29X4,=(25X4)X29,=100X29,=2900;(171)598X101,=598X(100+1),=598X100+598X1,=59800+598,=60398;(172)125X48,=(125X8)X6,=1000X8,=8000;=1000X13乙=137000;4200-1934-1066,=4200-(1934+1066),=4200-3000,=1200;290X54+29X460

57、,=290X54+290X46,=290X(54+46),=290X100,=29000;46X102+308,=46X(100+2)+308,=46X100+46X2+308,=4600+92+308,=4600+(92+308),=4600+400,=500025X137X4,=25X4X137,=100X13乙=13700;38X101,=38X(100+1),=38x100+38x1,=3800+38,=3838.68X200X25,=68X(200X25)=68x5000,=340000;101X87-8乙=(101-1)X8乙=100X87,=8700;56X67+33X56,=5

58、6X(67+33),=56X100,=5600;9+498+102+211,=(498+102)+(9+211),=600+220,=820;1305+1238-405,=(1305-405)+1238,=900+1238,=2138;2452-(75+452),=2452-452-75,=2000-75,=1925245-65-35,=245-(65+35),=245-100,=145;186+82+18,=186+(82+18),=186+100,=286;25X(4X97),=(25X4)X9乙=100X97,=9700;8X(25+20),=8X25+8X20,=200+160,=36

59、0;24X56+44X24,=24X(56+44),=24X100,=2400;700-4-25,=700-(4X25),=700-100,=7.39X49+39X51,=39X(49+51),=39X100,=3900;108X25,=27X4X25,=27X(4X25),=27X100,=2700;25X125X2X4,=(25X4)X(125X2),=100X250,=25000;56X99+56,=56X(99+1),=56X100,=5600;124X75-124X72-124X2,=124X(75-72-2),=124X1,=124;104X39-39X4,105X32,=(100

60、+5)X32,=100X32+5X32,=3200+160,=3360;4X43X25,=4X25X43,=100X43,=4300109+127+73,=109+(127+73),=109+200=309;608-154-146,=608-(154+146),=608-300,=308;165-97,=165-(100-3),=165-100+3,=65+3=68;258+98,=258+(100-2),=258+100-2,=358-2,=356.109+127+73,=109+(127+73),=109+200=309;608-154-146,=608-(154+146),=608-30