‘壹’ 四年级简便运算500道
(1).527+199
(2).735-198
(3).105×99
(4).865-198
(5).75×98
(6)68×99+68
(7)63×88+88×37
(8)58×99+58
(9)25×49+75×49
(10)575-78-22
(11)48×89+48
(12)367-199
(13)56×102
(14)75×48+75×52
(15)(20+4)×25
(16)99×11
(17)32×(200+3)
(18)68×39+68
(19)239×101
(20)38×25×4
(21)42×125×8
(22)(25×125)×8×4
(23)78×125×8×3
(24)(125×25)×4
(25)(125+25)×4
(26)127+352+73+4
(27)89+276+135+33
(28)5+204+335+96
(29)25+71+75+29+88
(30)243+89+111+57
(31)399+(154+201)
(32)480+325+75
(33)78+53+47+2291+89+11
(34)36+18+64
(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)65×5×2
(61)15×23×4
(62)36×25
(63)25×125×32
(64)35×22
(65)5×(63×2)
(66)540÷45÷2
(67)540÷36
(68)216+305
(69)25×32
(70)47+236+64
(71)6×(15×9)
(72)402+359
(73)43+78+122+257
(74)25×(26×4)
(75)25×44
(76)354+(229+46)
(77)25×(4×12)
(78)25×(4+12)
(79)64×64+36×64
(80)99×99+9949×99+49
(81)49×99+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
19×75×8
62×8×25
43×15×6
41×35×2
(84)a×(b+c)=a×b+a×c
136×406+406×64
702×123+877×702
246×32+34×492
(84).a×(b-c)=a×b-a×c
102×59-59×2
456×25-25×56
43×126-86×13
101×897-897
(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÷b÷c=a÷(b×c)
4500÷4÷75
16800÷8÷25
248000÷8÷125
5200÷4÷65
(88)
4500×102÷90
3600÷80×2
125÷20×8
250÷75×30
(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)
321×46-92×27-67×46
75×32×125
25×12
25×16
25×24
28×25
32×250
25×44
25×84
125×16
125×24
125×32
56×125
125×88
720×125
48×125
(95)13×99+13
(96)91×99+91
(97)43×99+43
(98)38×99+38
(99)184×99+184
(100)26×99+26
(101)55×101-55
(102)16×101-16
(103)57×101-57
(104)39×101-39
(105)123×101-123
(106)852×101-852
(107)17×21+83×21
(108)124×63+124×37
(109)62×74+38×74
(110)27×25+13×25
(111)33×33+67×33
(112)18×35+2×35
(113)116×57+43×116
(114)17×23-7×23
(115)124×63-24×63
(116)132×28-32×28
(117)34×54-24×54
(118)53×25-13×25
(119)381×32-32×81
(120)93×125-13×125
(121)24×99
(122)99×26
(123)98×34
(124)99×45
(125)99×32
(126)18×99
(127)12×101
(128)33×103
(129)101×54
(130)103×23
(131)62×101
(132)24×102
(133)527+199
(134)735-198
(135)105×99
(136)865-198
(137)75×98
(138)68×99+68
(139)63×88+88×37
(140)58×99+58
(141)25×49+75×49
(142)575-78-22
(143)48×89+48
(144)367-199
(145)56×102
(146)75×48+75×52
(147)2×125×8
(148)(25×125)×8×4
(149)78×125×8×3
(150)(125×25)×4
(151)(125+25)×4
(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)65×5×2
(188)15×23×4
(189)36×25
(190)25×125×32
(191)35×22
(192)5×(63×2)
(193)540÷45÷2
(194)540÷36
(195)216+305
(196)25×32
(197)47+236+64
(198)6×(15×9)
(199)402+359
(200)43+78+122+257
(201)25×(26×4)
(202)25×44
(203)354+(229+46)
(204)25×(4×12)
(205)25×(4+12)
(206)64×64+36×64
(207)99×99+99
(208)49×99+49
(209)49×99+49
(210)88+56+12
加法交换律:a+b=b+a加法结合律:(a+b)+c=a+(b+c)
乘法交换律:a×b=b×a乘法结合律:(a×b)×c=a×(b×c)
乘法分配律:(a+b)×c=a×c+b×c或a×(b+c)=a×b+a×c
减法的性质:a-b-c=a-(b+c)
带着加减号搬家:a-b-c=a-c-ba-b+c=a+c-ba+b-c=a-c+b
怎么简便怎么算:
★(23+56)+4725×277×4125×(3+8)
462-83-1178×(30×125)3200÷25÷4
★★425-38+755246-(246+694)25×6+25×4
360÷(18×4)32×105598+735
★★★99×38+3898×3425+75-25+75
48×125540÷45103×56
1.67×21+18×21+85×79
=21×(67+18)+85×79
=21×85+85×79
=85×(21+79)
=8500
2.375×480+6250×48
=480×(375+625)
=480000
3.321×81+321×19
=321×(81+19)
=32100
4.222222×999999
=222222×(1000000-1)
=222222000000-222222
=222221777778
5.333333×333333
=111111×999999
=111111×(1000000-1)
=111111000000-111111
=111110888889
6.654321×909090+654321×90909
=654321×999999
=654321×(100000-1)
=654321000000-654321
=654320345679
7.34×3535-35×3434
=34×35×101-35×34×101
=0
8.345345÷15015
=345×1001÷(15×1001)
=345÷15×1001÷1001
=23
9.75×45+17×25
=25×3×45+17×25
=25×(135+17)
=25×152
=25×4×38
=3800
10.(48×75×81)÷(24×25×27)
=48÷24×75÷25×81÷27
=2×3×3
=18
‘贰’ 256-198=