分式混合运算专项练习158题(有答案)ok
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分式混合运算专项练习158题(有答案)
(1)
(2) +﹣
(3)
(4)
(5) (﹣)•÷(+)(6) 3.(7) (8)
(9)
(10) .(11) ;
(12) .(13) •÷;
(14) (﹣)÷.
(15)
(16)
(17)
(1+)÷
(18)
(19)
(20) ()2•+÷(21) ;(22)
(23)
(24)
(25)
(26)
(27) ;(28) .
(29) ;
(30) .
(31) ;
(32) ÷•.(33) ()÷.
(34)
(35) (36) ;
(37) ;
(38) ;(39)
(40) .
(41)
(42)
(43)
(44) (﹣)÷
(45)
(46)
(47) +
(48) ;
(49) .(50) .(51)
(52).(53);
(54).(55)÷•;(56)1﹣÷.
(57)
(58)
(59)÷
(60);
(61).
(62);
(63).(64)(+1)÷(1﹣)
(65)
(66)•﹣÷(67);
(68).(69)
(70)[﹣(﹣x﹣y)]÷
(71)﹣÷x.
(72);
(73);
(74)÷(x+3)•;
(75)(a ﹣)÷•
(76)()÷•(2﹣x)2;(77)•(﹣)2(78)
(79);(80)
(81);(82);(83);(84)
(85)
(86)
(87)
(88).(89)
(90).(91);(92).
(93)[+÷(+)2]•
(94)
(95);
(96)
(97);(98)
(99)x ﹣
(100)
(101)
(102).(103).
(104);(105).(106)(x2﹣y2)•÷;
(107)+﹣
(108).(109)÷﹣.
(110)
(111).
(112).
(113)
(114).(115).(116)
(117)
(118)
(119)(120)(x2y﹣1)﹣3•(﹣x﹣2)﹣3÷(xy)﹣1.(121);
(122)(﹣)•.
(123)
(124).(125).(126).
(127).(128).
(129)﹣
(130)
(131)1﹣÷.(132)(﹣)3÷•(﹣)2;(133).(134)
(135).(136).(137)
(138).
(139)
(140).
(141).(142);
(143).(144).(145).(146).(147)(148);(149).(150)
(151)
(152)
(153).(154)
(155)
(156).(157);
(158).
参考答案:
(1)=﹣=;
(2)+﹣=++==;
(3)=﹣=2x+6﹣x+3=x+9;
(4)=÷(﹣)=•(﹣)=﹣.(5)原式===.
(6)原式===
(7)原式==x+y
(8)原式==a﹣1
(9)原式==y﹣3
(10)=
=3(x+2)﹣(x﹣2)=3x+6﹣x+2=2x+8.
(11)原式==;
(12)原式==(﹣1)==
(13)解:原式==;
(14)解:原式==
(15)原式=÷•
=••
=.
(16)原式=•
=﹣=﹣=.
(17)原式= = =.
(18)=
==﹣y.
(19)原式==1﹣==
(20)原式===.
(21)原式=××=.
(22)原式==
(23)原式==﹣1
(24)原式===
(25)=+﹣=,
===;
(26)=﹣••=﹣;
(27)=﹣•, =﹣==﹣;
(28),
=(﹣)•,
=﹣,
=,
=,
=﹣.
(29)原式==(a+1)﹣(a﹣1)=2;
(30)原式=
(31)原式==;
(32)原式==.
(33)()÷=•=
(34)原式===.
(35)原式=•(a﹣1)2=a﹣1.
(36)原式=×=;
(37)原式=×=;
(38)原式=×==;(39)原式==a4b;
(40)原式==
(41)=×=2(m﹣3)﹣(m+3)=m﹣9.
(42)原式==﹣.
(43)原式=﹣+=1﹣x+x2=x2﹣x+1.
(44)原式=(﹣)×=×=.
(45)原式===3(1+x);
(46)原式==.
(47)原式=×+=+=.
(48)原式=﹣==;
(49)原式=••=.
(50)原式=====.(51)原式=====;
(52)原式===.
(53)原式==;
(54)原式=×=
(55)原式=•=;
(56)原式=1﹣=1﹣==.