1、1)0.8×33×1.25
(2)×+÷10
(3)9.56+4.875-+1.44
(4)÷6-×
(5)4.6×+8.4÷-×5
(6)15.6÷[32×(1-)÷3.6]
(7)4÷+6×
(8)×+×-
(9)×80××1.25
(10)25×1.25×4×8
(11)0.7+3.9+4.3+6.1
(12)7.35×99+7.35
(13)47-8÷17-
(14)46×101
(15)15.6--
(16)x -x=×45
(17)14×+14
2、×
(18)÷++
(19)×+÷+
(20)3-×-
(21)--
(22)-+-
(23)×+×
(24)÷75﹪-÷
(25)(+-)×24
(26)205×32-656
(27)20%x=80
(28)÷×(+)
(29)--1.75+0.4
(30)30%x+9=39
(31)40%x+15=55
(32)(-)×45
(33)2-[+(-)]
(34)0.3÷[1÷(3.3-2.95)]
(35)50%x-6=4
3、4
(36)(-)×(÷)
(37)[(-)÷+]×
(38)(-)×35×
(39)24×(+-)
(40) 60%x+30%x=90
(41)×[-(-)]
(42) (2-1.6×0.5+1.2)÷8%
(43)8.6÷4.3×
(44)×(-0.25)÷
(45)[3.6-(4.7+2.3)×]÷1.2
(46)96%÷[3-(0.6+2.4×0.2)]
(47)250%×15%×240%
(48)12.5%×19+12.5%×1.3
(49)÷+
4、
(50)×+÷
(51)÷[×(+)]
(52)60×(+-)
(53)(2-1.6×0.5+1.2)÷8%
(54) 60%+2.1÷ 12%
(55)(+×)÷
(56)15%×1.25×6×80%
(57)6.78×90%+67.8%
(58)12×(-)
(59)(9-10×)÷
(60)101.1-25.93+5.1÷0.85
(61)(- )×(÷1)
(62)2.6×+×
(63)3--
(64)- 50%=12
(65)×+÷
(66)×
5、+)+
(67)×÷(-)
(68)×1.25+×2.2-
(69)×8××1.25
(70)4-÷4-
(71)÷[(+)×]
(72)
(73)χ-χ=240
(74)×+÷
(75)(10-÷)×
(76)x- 0.8x = 16+6
(77)×[-(-)]
(78)25.125――17.4
(79)0.38×7-+4×
(80)12.3-2.45-5.7-4.55
(81)×17-12×
(82)×[÷(×)]
(83)20
6、 x– 8.5= 1.5
(84) x- x -4= 21
(85) X-X=
(86)(-)÷
(87)(20.1-21×)÷5.1
(88)7.6÷5.4÷1.9×5.4
(89)0.2+[×(0.15+)
(90)24××(5×)
(91) χ-χ=
(92)×÷+
(93)6×-χ=
(94) χ+=
(95)15×+÷16
(96)3.64×[1÷(-2.09)]
(97)(-+)×45
(98)(-×)÷×5
(99)
7、 χ×(+)=
(100)35% × 28+28 × 65%
(101)÷[×(-)]
(102)10÷-÷10
(103)×÷÷
(104)7-(0.35+2)
(105)(-)÷×
(106)4-1÷4-×3
(107)[-(-)]×
(108)8.5×+0.75×5+6.5÷1
(109)1+0.54÷0.9-0.75
(110)9×+9×+9
(111)24÷[(-)×3]
(112)×(÷)
(113)(-)×
(114)×[(+)÷]
(115)×
8、÷
(116)(-)÷
(117)×(1-×)
(118)(5÷-)×
(119)(1-÷)×
(120)×+÷
(121)(++-)÷
(122)4÷[1-(+)]
(123)+3.25++5.48
(124)×+×
(125)(-÷4×)÷
(126)(111+999)÷[56×(-)]
(127)(+)×160×
(128)15-(÷2+5)
(129)6.4÷+1.25×3
(130)[0.25×4-(+)]×
(131)×+×
(132)+(+)×
(133)×(+)÷
(134)5.6×16.5÷70%÷1.1
(135)×[280÷(7.28+6.72)]