(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;