四年級(jí)數(shù)學(xué)簡(jiǎn)便運(yùn)算500道

(1).527+199

(2).735-198

(3).105x99

(4).865-198

(5).75x98

(6)68x99+68

(7)63x88+88x37

(8)58x99+58

(9)25x49+75x49

(10)575-78-22

(11)48x89+48

(12)367-199

(13)56x102

(14)75x48+75x52

(15)(20+4)x25

(16)99x11

(17)32x(200+3)

(18)68x39+68

(19)239x101

(20)38x25x4

(21)42x125x8

(22)(25x125)x8x4

(23)78x125x8x3

(24)(125x25)x4

(25)(125+25)x4

(26)127+352+73+4

(35)168+250+32

(36)85+41+15+59

(37)78+46+154

(38)130-46-34

(39)263-96-104

(40)970-132-68

(41)400-185-15

(42)472-126-124

(43)168-28-72

(44)437-137-63

(45)244+182+56

(46)951-395

(47)19+199+1999

(48)34+304+3004

(49)798+321

(50)325-156+675-144

(51)8+98+998+9998

(52)99999+9999+999+99+9+4

(53)44+37+56

(54)163+49+261

(55)74+(137+326)

(56)249+402

(57)189+35+211+165

(58)483-236-64

(59)582-157-182

(60)65x5x2

(61)15x23x4

(62)36x25

(63)25x125x32

(64)35x22

(65)5x(63x2)

(66)540+45+2

(67)540+36

(68)216+305

(69)25x32

(70)47+236+64

(71)6x(15x9)

(72)402+359

(73)43+78+122+257

(74)25x(26x4)

(75)25x44

(76)354+(229+46)

(77)25x(4x12)

(78)25x(4+12)

(79)64x64+36x64

(80)99x99+9949x99+49

(81)49x99+49

(82)a+b=b+a

88+56+12

178+350+22

56+208+144

(83)(a+b)+c=a+(b+c)

(23+56)+47

19x75x8

62x8x25

43x15x6

41x35x2

(84)ax(b+c)=axb+axc

136x406+406x64

702x123+877x702

246x32+34x492

(84).ax(b-c)=axb-axe

102x59-59x2

456x25-25x56

43x126-86x13

101x897-897

(85)a-b-c=a-(b+c)

458-45-155

2354-456-544

68547-457-123-420

(86)a-b+c=a+c-b

4235-4067+765

3569+526-1569

45682-7538+14318

(87)a-rbvc=a-i-(bxc)

4500亍4?75

16800-8+25

248000+8+125

5200+4-65

(88)

4500x1024-90

3600-80x2

125-20x8

250+75x30

(89)a-b=a-(b+c)+c

429-293

1587-689

8904-1297

87905-388

(90)a-b=a-(b-c)-c

2564-302

25478-9006

5024-502

1251-409

(91).a+b=a+(b+c)-c

254+489

(92)a+b=a+(b-c)+c

124+4005

1235+607

248+803

2005+45687

(93)

254+246+744+1054

5897+568-897+432

45627-258-742-1627

(94)

321x46-92x27-67x46

75x32x125

25x12

25x16

25x24

28x25

32x250

25x44

25x84

125x16

125x24

125x32

56x125

125x88

720x125

48x125

(95)13x99+13

(96)91x99+91

(97)43x99+43

(98)38x99+38

(99)184x99+184

(100)26x99+26

(101)55x101-55

(102)16x101-16

(103)57x101-57

(104)39x101-39

(105)123x101-123

(106)852x101-852

(107)17x21+83x21

(108)124x63+124x37

(109)62x74+38x74

(110)27x25+13x25

(111)33x33+67x33

(112)18x35+2x35

(113)116x57+43x116

(114)17x23-7x23

(115)124x63-24x63

(116)132x28-32x28

(117)34x54-24x54

(118)53x25-13x25

(119)381x32-32x81

(120)93x125-13x125

(121)24x99

(122)99x26

(123)98x34

(124)99x45

(125)99x32

(126)18x99

(127)12x101

(128)33x103

(129)101x54

(130)103x23

(131)62x101

(132)24x102

(133)527+199

(134)735-198

(135)105x99

(136)865-198

(137)75x98

(138)68x99+68

(139)63x88+88x37

(140)58x99+58

(141)25x49+75x49

(142)575-78-22

(143)48x89+48

(144)367-199

(145)56x102

(146)75x48+75x52

(147)2x125x8

(148)(25x125)x8x4

(149)78x125x8x3

(150)(125x25)x4

(151)(125+25)x4

(152)127+352+73+4

(153)89+276+135+33

(154)5+204+335+96

(155)25+71+75+29+88

(156)243+89+111+57

(157)399+(154+201)

(158)480+325+75

(159)78+53+47+2291+89+11

(160)36+18+64

(161)168+250+32

(162)85+41+15+59

(163)78+46+154

(164)130-46-34

(165)263-96-104

(166)970-132-68

(167)400-185-15

(168)472-126-124

(169)168-28-72

(170)437-137-63

(171)244+182+56

(172)200-173-27

(173)124+68+76

(174)263-96-104

(175)970-132-68

(176)400-185-15

(177)472-126-124

(178)603+421745-305

(179)951-395

(180)19+199+1999

(181)34+304+3004

(182)798+321

(183)325-156+675-144

(184)8+98+998+9998

(185)99999+9999+999+99+9+4

(186)582-157-182

(187)65x5x2

(188)15x23x4

(189)36x25

(190)25x125x32

(191)35x22

(192)5x(63x2)

(193)540?45+2

(194)540-36

(195)216+305

(196)25x32

(197)47+236+64

(198)6x(15x9)

(199)402+359

(200)43+78+122+257

(201)25x(26x4)

(202)25x44

(203)354+(229+46)

(204)25x(4x12)

(205)25x(4+12)

(206)64x64+36x64

(207)99x99+99

(208)49x99+49

(209)49x99+49

(210)88+56+12

加法交換律:a+b=b+a加法結(jié)合律：(a+b)+c=a+(b+c)

乘法交換律：axb=bxa乘法結(jié)合律：(axb)xc=ax(bxc)

乘法分配律：(a+b)xc=axc+bxc或ax(b+c)=axb+axc

減法的性質(zhì):a-b-c=a-(b+c)

帶著加減號(hào)搬家:a-b-c=a-c-ba-b+c=a+c-ba+b-c=a-c+b

怎么簡(jiǎn)便怎么算：

★(23+56)+4725x277x4125x(3+8)

462-83-1178x(30x125)3200+25-4

★★425-38+755246-(246+694)25x6+25x4

360+(18x4)32x105598+735

★★★99x38+3898x3425+75-25+75

48x125540+45103x56

1.67x21+18x21+85x79

=21x(67+18)+85x79

=21x85+85x79

=85x(21+79)

=8500

2.375x480+6250x48

=480x(375+625)

=480000

3.321x81+321xl9

=321x(81+19)

=32100

4.222222x999999

=222222x(1000000-1)

=222222000000-222222

=222221777778

5.333333x333333

=111111x999999

=111111x(1000000-1)

=111111000000-111111

=111110888889

6.654321x909090+654321x90909

=654321x999999

=654321