(4)180题分数乘除法简便运算(有问题详解)

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分数乘除法简便运算专项练习180题(有答案)
(1)×101﹣,

(2)×÷×,

(3)×99+,
(4)( +)×,
(5)×+×﹣,
(6)3×25,
(7)36×,

(8)(﹣)×,
(9),
(10),
(11),
(12),
(13),
(14)85×,
(15)×25, (16)(+)×7×5, (17)×+×, (18)×12+×19+, (19)(﹣)×24 (20)×+× (21) (22)(+)×15×17
(23)×101,
(24)×+×
(25)(+)×24
(26)××13×
(27)×12﹣
(28)4.8×+4.8÷,
(29)×+×, (30)+++…+ (31) (32) (33)25×(+)×17 (34)×18+2×17 (35)11×(﹣)×17 (36)×86
(37)
(38)×﹣×,
(39),
(40)×+÷9,
(41)32×,
(42)39÷7+31×,
(43)÷[(﹣)+(﹣)], (44)2008× (45)+++…+ (46)(+)×27×9, (47)××, (48)××…××,
(49)(﹣)×60,
(50)×+×,
(51)25×8,
(52)×(15×)×,
(53)×2005, (54)××13×11, (55)(+)×, (56)×21+28×, (57)×+×﹣, (58)( +)×8×4, (59)34÷35×36, (60)×+×,
(61)×+××(﹣),
(62)138×,
(63)4×(﹣)×7,
(64)×+×,
(65)×+,
(66)(﹣)×,
(67)××, (68)×+×+, (69)45×+×43, (70)×, (71), (72)(+﹣)×24
(73)×+÷
(74)(+﹣)÷,

(75),
(76)÷5+×,
(77)13﹣(2﹣), (78)(+﹣﹣)÷, (79)2004× (80)8﹣3﹣1+1, (81), (82), (83)×+÷﹣1÷4, (84)
76×(﹣)+23×(+)﹣53×(﹣),

(85) ×
(86)27×(﹣)×37
(87)17×+×62+17÷48

(88)2013÷﹣2013÷2012
(89) (90) (91) (92) (93)×+× (94)(3×)×4×× (95)×+× (96)14×﹣
(97)(+)×12
(98)×+×
(99)
(100)
(101)×2007
(102)×101﹣
(103) (104) (105)×(9﹣) (106)12.1﹣()×105 (107)(﹣+)×28+10.1 (108)(++)×2 (109)×80 (110)8×
(111)5.5×+×
(112)897×﹣+104×0.375
(113)×86+5.75×(3.5﹣)
(114)
(115)
(116)×24
(117) (118)20÷﹣÷ (119)14÷14 (120)333387×79+66661×790 (121))×48 (122)18×+2×﹣
(123)41×+51×+61×

(124)2001×
(125)1998÷

(126).
(127)(﹣)×23×35,
(128)×+÷4 (129)48×(+﹣) (130)35×﹣+11× (131)××18× (132)×31﹣ (133)(90+)× (134)34× (135)35×
(136)×2006
(137)×39+×27
(138)×35+×17
(139)×5+×5+×10
(140)7×13×(﹣)
(141)×+×
(142)×+×+× (143)×+×, (144)(++)×12, (145), (146)×25××19, (147)(+)×54, (148)(+)×8×7, (149),
(150)×+×+×,
(151)20112011,
(152)139×﹣137×
(153)2012×
(154)+++++…+
(155)×2008﹣2007,
(156), (157), (158), (159)++++, (160)3+6×0.25+0.625×6+6×0.125, (161)×+×+×, (162)×+×+×,
(163)[2+(5.4﹣3)×1]÷3
(164)×(4.85÷﹣3.6+6.15×3)
(165)
(166),

(167)2011÷2011+
(168)11×+13×+15×+17×+ (169)()÷(+﹣) (170)148×+86×+74×, (171)2011×﹣2011×﹣2011×, (172), (173)13+86×0.25+86×0.625+86×
(174) ,
(175).

(176)
(1+++)×(+++)﹣(1++++)×(++),
(177)238÷ (178)2000÷ (179)(+++)×(+++)﹣(++++)×(++) (180),
分数乘除法简便运算180题参考答案:
(1)×101﹣, =×(101﹣1), =×100, =70; (2)×÷×, =×××, =(×)×(×), =×1, =; (3)×99+, =×(99+1), =×100, =60; (4)( +)×, =×, =; (5)×+×﹣, =(+﹣1)×, =×, =; (6)3×25, =(3+)×25, =3×25+×25, =75+20, =95; (7)36×, =(35+1)×, =35×+1×, =34+, =34; (8)(﹣)×, =×﹣×, =3﹣2, =1. (9), =12×+12×, =4+3, =7; (90), =×(+), =×1, =; (11), =(30+1)×, =30×+1×, =19+, =19; (12), =×48﹣×48,
=8﹣6,
=2;
(13),
=×(11﹣1),
=×10,
=7.
(14)85×,
=(86﹣1)×,
=86×﹣1×,
=3﹣,
=2;
(15)×25,
=×(24+1),
=×24+×1,
=5+,
=5;
(16)(+)×7×5,
=×7×5+×7×5,
=15+7,
=22
(17)×+×,
=×+×,
=×(+),
=×,
=;
(18)×12+×19+,
=×(12+19+1),
=×32,
=20.
(19)(﹣)×24
=×24﹣×24
=6﹣4
=2;
(20)×+×
=×+×
=×(+)

=;
(21)
=×+×
=(+)×
=1×
=.
(22)(+)×15×17
=(+)×(15×17)
=×15×17+×17×15
=17+30
=47;
(23)×101, =×(100+1), =×100+1×, =79+, =79; (24)×+× =×(+) =×1 =; (25)(+)×24 =×24+×24 =3+2 =5; (26)××13× =(×13)×(×) =2× =1; (27)×12﹣ =×(12﹣1) =×11 =3 (28)4.8×+4.8÷, =4.8×+4.8×, =4.8×(+), =4.8×1, =4.8; (29)×+×, =×+×, =×(+), =×1, =; (30)+++…+ =1﹣+﹣+﹣+…+﹣ =1﹣ =. (31) =()× =1× =; (32) =×+× =×(+) =×1 =; (33)25×(+)×17 =25×17×+×25×17 =119+125 =244 (34)×18+2×17 =×18+6××17
=×(18+6×17)
=×220
=88
(35)11×(﹣)×17
=11×17×﹣×17×11
=17﹣11
=6
(36)×86
=×(87﹣1)
=×87﹣
=86﹣
=85
(37)
=×+×
=×(+)
=×1
=.
(38)×﹣×,
=(﹣)×,
=1×,
=;
(39),
=×48+×48﹣×48,
=10+28﹣32,
=6;

(40)×+÷9,
=×+×,
=(+)×,
=1×,
=;
(41)32×,
=(33﹣1)×,
=33×﹣,
=13﹣,
=12.
(42)39÷7+31×,
=(39+31)×,
=70×,
=10;
(43)÷[(﹣)+(﹣)],
=÷[+],
=,
=;
(44)2008×
=(2008+)×
=2008×+×
=1+
=1; (45)+++…+ =×(﹣+﹣+…+﹣) =×(﹣) =× =. (46(+)×27×9, =×72×9+×27×9, =144+45, =189 (47)××, =×(×), =×, =; (48)××…××, =. (49)(﹣)×60, =×60﹣×60, =35﹣12, =23; (50)×+×, =(+)×, =; (51)25×8, =25×8+×8, =200+3, =203; (52)×(15×)×, =(×)×(15×), =×2, =. (53)×2005, =×(2004+1), =×2004+1×, =2003+, =2003; (54)××13×11, =, =10×1, =10; (55)(+)×, =, =11, =; (56)×21+28×, =(21+28)×, =49×, =13;
(57)×+×﹣,
=(﹣1)×,
=×,
=;
(58)( +)×8×4,
=,
=24+20,
=44;
(59)34÷35×36,
=(35+1),
=
=34,
=;
(60)×+×,
=,
=,
=,
=.
(61)×+××(﹣),
=×+××,
=×(+×),
=×(+),
=×,
=;
(62)138×,
=(137+1)×,
=137×+1×,
=7+,
=7
(63)4×(﹣)×7,
=( 4×7)×(﹣),
=4××7﹣7××4,
=21﹣8,
=13;

(64)×+×,
=(+)×,
=1×,
=;
(65)×+,
=+,
=;
(66)(﹣)×,
=×,
=;
(67)××,
=×,
=;

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