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1、精选优质文档-倾情为你奉上精选优质文档-倾情为你奉上专心-专注-专业专心-专注-专业精选优质文档-倾情为你奉上专心-专注-专业 四年级数学整数简便运算120道(1) 67423358(2) 258582674(3) 12516(4) 50(24)25(5) 783125(6) 26103(7) 50112(8) 25(40+8)(9) 39146114(10) 1638378(11) 20213(12) 7745(13) 2799(14) 48250(15) 98303(16) 494949(17) 55252545(18) 123672367(19) 3910139(20) 996464(2

2、1) 76232423(22) 121912(23) 212547946(24)25165(25)52324832(26)181371837(27)45018(28)42035(29)48015(30)2199(31)12532(32)12301(33)7534(34)199919(35)2569469(36)131349(37)(25+125)8(38)5416767441(39)43201(40)10235(41)30422(42)(30+4)25(43)387627(44)15281488(45)16401(46)10323(47)(302)15(48)125(8+16)(49)6848

3、682(50)527635(51)12(405)(52)649149(53)3598(54)231343423(55)10245(56)648203(57)9832(58)4425(59)63152(60)434339(61)27373723(62)2567567(63)4810148(64)996262(65)4199(66)76598(67)56016(68)20134(69)3625(70)304297(71)18451855(72)226132613(73)1530115(74)(30+8)25(75)25652525(76)751417540(77)12518(78)253525(7

4、9)71237113(80)125(808)(81)1018989(82)88222212(83)28574328(84)20241(85)25194(86)479947(87)10337(88)34201(89)25516(90)565649(91)57262643(92)3739739(93)7810178(94)1995353(95)251242425(96)25028(97)12516(98)25094(99)48125(100)24250(101)40215(102)25+250)4(103)1999199(104)27188227(105)2464618(106)40125(107

5、)72101(108)42(301)(109)1018585(110)2519(111)1524951152(112)50(608)(113)939993(114)131258(115)1251763125(116)492145155(117)43252(118)2425(119)281112811(120)638916363参考答案(1) 67423358 =(67+33)+(42+58) =100+100 =200(2) 258582674 =25858(26+74) =200-100 =100(3) 12516 =12582 =10002 =2000(4) 50(24)25 =(502)

6、(425) =100100 =10000(5) 783125=(73)(8125)=211000=21000(6) 26103=26(100+3)=26100+263=2600+78=2678(7) 50112=(500+1)12=50012+112=6000+12=6012(8) 25(40+8)=2540+258=1000+200=1200(9) 39146114 =(39+61)14 =10014=1400(10) 1638378 =(163+37)8 =2008=1600(11) 20213 =(200+2)13 =20013+213 =2600+26 =2626(12) 7745 =

7、77(45) =7720=1540(13) 2799 =27(100-1) =27100-271 =2673 48250 =124250 =12(4250) =121000 =12000 98303 =98+3+300 =102+300 =402 494949 =49(1+49) =4950 =2450 55252545 =25(55+45) =25100 =2500 123672367 =(123-23)67 =10067=6700 3910139 =39(101-1) =39100=3900 996464 =(99+1)64 =10064 =6400(21) 76232423 =(76+2

8、4)23 =10023 =2300 121912 =12(1+19) =1220 =240(23) 212547946 =(2179)+(25446) =100+300=400(24)25165 =25445 =(254)(45) =10020=2000(25)52324832 =(5248)32 =10032 =3200(26)181371837 =18(137-37) =18100 =1800(27)45018 =450(36) =45036 =1506 =25(28)42035 =420(75) =42075 =605=12(29)48015 =48035 =1605 =32(30)21

9、99=21(100-1)=21100-211=2100-21=2079(31)12532=12584=10004=4000(32)12301=12(300+1)=12300+121=3600+12=3612(33)7534 =7543 =3003=900(34)199919 =19(99+1) =1900(35)2569469=(256-46)9=2109=1890(36)131349 =13(1+49) =1350=650(25+125)8 =258+1258 =200+1000 =1200(38)5416767441=(541-441)67=10067=6700(39)43201=43(2

10、00+1)=43200+431=8600+43=8643(40)10235=(100+2)35=10035+235=3500+70=3570(41)30422 =(300+4)22 =30022+422 =6600+88 =6688(30+4)25 =3025+425 =750+100=850(43)387627 =(38+62)7 =1007 =700(44)15281488 =(152+148)8 =3008=2400(45)16401 =16(400+1) =16400+161 =6400+16=6416(46)10323=(100+3)23=10023+323=230069=2369(

11、302)15 =3015+215 =45030=480(48)125(8+16) =1258+12516 =1000+2000 =3000(49)6848682=68(48+2)=6850=3400(50)527635 =5(2763) =5100=500(51)12(405) =1240-125 =480-60 =420(52)649149 =(64-14)9 =509=450(53)3598=35(100-2)=35100-352=3500-70=3430(54)231343423 =23(13434) =23100=2300(55)10245=(100+2)45=10045+245=45

12、0090=4590(56)648203=648+2+201=650+201=851(57)9832=(100-2)32=10032-232=3200-64=3136(58)4425=11425=11100=1100(59)63152 =63+30=93(60)434339 =43(1+39) =4340 =1720(61)27373723=(2723)37=5037=1850(62)2567567=(25656)7=2007=1400(63)4810148=48(101-1)=48100=4800(64)996262 =(99+1)62 =10062=6200(65)4199=41(100-1

13、)=41100-411=4100-41=4059(66)76598 =765+100-2 =863(67)56016=560(44)=56044=1404=35(68)20134=(200+1)34=20034+134=680034=6834(69)3625=9425=9100=900(70)304297=301+3+197=501(71)18451855 =(45+55)18 =10018 =1800(72)226132613 =(226-26)13 =20013 =2600(73)1530115 =15(301-1)=15300=4500(30+8)25 =3025+825 =750+20

14、0=950(75)25652525 =25(6525) =25100 =2500(76)751417540 =75(141-40) =75101 =7575(77)12518 =125(10+8) =12510+1258 =1250+1000 =2250(78)253525 =25(35+1) =2536 =2549 =900(79)71237113 =71(23-13) =710(80)125(808) =12580-1258 =10000-1000 =9000(81)1018989 =(101-1)89 =8900(82)88222212 =(88+12)22 =2200(83)28574

15、328 =28(57+43) =2800(84)20241 =(200+2)41 =20041+241 =8200+82 =8282(85)25194=25419=1900(86)479947 =47(991) =47100 =4700(87)10337 =(100+3)37 =10037+337 =3700+111 =3811(88)34201 =34(200+1) =34200+341 =6800+68=6868(89)25516 =254(45) =10020=2000(90)565649 =56(49+1) =5650 =2830(91)57262643 =(57+43)26 =100

16、26 =3600(92)3739739 =(373-73)9 =3009 =2700(93)7810178 =78(1011) =7800(94)1995353=(199+1)53=10600(95)251242425=25(12424)=2500(96)25028 =25047 =10007 =7000(97)12516 =12582 =10002 =2000(98)25094=25049=10009=9000(99)48125=6(8125)=6000(100)24250=6(4250)=6000(101)40215=(400+2)15=40015+215=6000+30=6030(25+

17、250)4 =254+2504 =100+1000 =1100(103)1999199 =199(9+1) =1990(104)27188227 =27(1882) =2700(105)2464618 =46(18+2) =4620 =920(106)40125 =(400+1)25 =40025+125 =10000+25 =10025(107)72101 =72(100+1) =72100+721 =7200+72 =7272(108)42(301) =4230-421 =1260-42 =1218(109)1018585 =(101-1)85 =8500(110)2519 =25(20-1) =2520-25 =500-25 =475(111)1524951152 =152(4951) =152100 =15200(112)50(608) =5060

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