七年级(下册)数学计算题汇总

七年级(下册)数学计算题汇总

Chapter6:RealNumbersCalculationQuestions1.Calculate:(1)||+|-1|-|3|(2)-+2.Calculate:3.(1)Calculate:-|2-|-3|+|(2)(x-1)^2=4.Calculate:-32+|-3|+.5.Calculate:+|3-|+.6.Calculate:+|-2|--(+1)2015.7.Calculate:(-1)2015++|1-|-.8.Solvetheequations:(1)5x^3=-40(2)4(x-1)^2=9.9.Findthevalueofxinthefollowingequations:(1)4x^2=25(2)27(x-1)^3-8=0.10.Findthevalueofxinthefollowingequations:(1)4x^2=81(2)(2x+10)^3=-27.11.Findthevalueofxinthefollowingequations:(1)(x+1)^2-3=0(2)3x^3+4=-20.12.Calculation:(1)+()^2+(2)13.Calculation:14.Calculation:(1)+-(2)15.16.Calculate:(1)(-)^2--|6|+|1|-(-1)(2)|1-|+|-|+|-2|(3)4(x+3)^2-16=0(4)27(x-3)^3=-8.17.Fillintheappropriatebracketswiththefollowingnumbers:-3,-2,0,1,2,3,|2|,|3|,...,integers{};|1/2|,|3/4|,...,fractions{};positivenumbers{};negativenumbers{};rationalnumbers{};irrationalnumbers{}.18.Fillintheappropriatesetswiththefollowingnumbers:-7,π,...,rationalnumberset{};irrationalnumberset{};negativerealnumberset{}.19.Fillintheappropriatebracketswiththefollowingnumbers:-10,-3,-2,2,...,42,-2π,integerset{};fractionset{};naturalnumberset{};positiverationalnumberset{}.20.Fillintheappropriatebracketswiththefollowingnumbers:-5,|-,-12,...,+,-30%,-(-6),-√2,positiverationalnumberset{...};non-positiveintegerset{...};negativefractionset{...};irrationalnumberset{...}.21.Fillintheappropriatesetswiththefollowingnumbers:-7,-22,...,+9,...,+10%,-2π,irrationalnumberset{};negativerationalnumberset{};positivefractionset{};non-negativeintegerset{}.22.Fillintheappropriatesetswiththefollowingnumbers:-1,-,21,-2,+6,π,integerset{...};positivefractionset{...};irrationalnumberset{...}.Chapter8:SystemofLinearEquationsCalculationQuestions1.Solvethesystemofequations:2.Solvethesystemofequations:3.Solvethefollowingequationsusingthespecifiedmethod:(1)(2)4.Calculate:(1)Calculate:+(2)Solvethesystemofequations.31.解下列不等式（组）：（1）x≥-1；（2）2x+1<3x-2。32.解不等式（组）并在数轴上表示解集：（1）x^2-3x-6>0；（2）|x-2|≤3。33.解不等式（组）：（1）5x>15；（2）-2x+1<x+2。34.解不等式（组）：（1）-1<x+2≤3；（2）2x+1>5-x。35.解下列不等式（组），并把解集在数轴上表示出来：（1）x≤2或x≥3；（2）x<-3或x>1。36.解不等式（组），并把解集在数轴上表示出来：（1）x>3；（2）x≤-2或x>4。37.求2x-1=5的解。解：2x-1=5，移项得2x=6，因此x=3。38.解不等式：3x+4≤7x-2的自然数解。解：将不等式化简得4≤4x，因此x≥1。因此不等式的自然数解为1、2、3、