苏科版七年级上册第1章-第2章阶段性计算题同步训练【含答案】.docx
初中数学苏科版七年级上册第1章.第2章阶段性同步训练3.计算题一、计算题L计算(1) (-2.5) 4 x(一 ” ;(2) -l4-2- (-3) 2.2 .计算:(1) 14-25 + 13(2) -I4 - |2 - 3| 4- (-1)2 X 8.计算:(1) 5-(-0.25)-|-8|-(2) -12-(-2)- + 3x|1-(-2)2|.计算:(1) -25+ “*(-32); 4 S(2) -14-(1-0.5)x|+(-3)2 .(6) -2 ( - 3)3v2 ; x- I )2+4 - 22x( -).-1x5-(-3)232.计算(1) -20-(-18)+ (-14)+ 13-1.25x0.4(-|)x(-8)Oil(3)1-|-l|-(+2;)-(-2.75)<4)-42x(i-A + |)-9-X519-l4 -4- (1 - 0.8 X j) -e- (7 - 32)33.it®:(1) - 9) - (+10) - (+2) - ( - 8);(2)5 +;(3) - ( - l2020) - ; x7-(-4)2; J 2 x (-3)+ 4洛一(一”(一 .9、2+ (-4)x 1 34(-24) x (-3 +-14-1-(1-0.5x1)x635.计算:(-标(+0.2) + 1 6 - (4-3) - (-4) + (-2)(-6.5) x (-2)-(-13)(一48) + (+”(-12)x:(5)12 - 7 x (-4) + 8 4- (-2)-91x 81-(-I4) + (-2)2 - (-3)2 - 2336.计算: 18-|-2| + (-3)2x1 16+(-25)+24+(-15);或一卷+ 3一+(一劫;(4) 48 -r 4 X (-2) (4);-14 + 3x(-4)-(-)x7 ;-99 2+14);(7)-15.45 x 2 + 4.05 x (-2) - 6.5 x (-2).37 .计算-20+ (-5) - (-18)(1) (1) + 1.25 + (8.5) (10)Q 4.(2) 81 -i- -x -T- (16)(- ; : + : ) x (-24)368.计算:(+3) + (-5) - 4 - (-2) 1 + (-2) +|-2-3|-55 v 67115(-81)+ : x * (-16) 4 x (-3)-5x (-2) + 6(6) 2 - 2 +,x 5(:3+W)(一-(与)*(> W)39.计算:(1) ( - 8) - (+8) - ( - 10)- 54x2 - 4-(-4 - )x -429-24x ()346-4x ( - 8 - ) + ( - 8) x ( - 8 - ) +12x ( -8 -)999(2) -14-1-(1-O.5xi)x640.ilg:(1) -7 + 13-6 + 20(3)81+(-16)(4) -24x(心+ 2)8 - ( - 2) 2x ( - 3) - ( - 5) 2(5) -I,+(一5 x 奈一 |0.8 - 1|答案解析局部一、计算题(1)解:原式="1 X | x(-:)=-4x(-:)=1;(2)解:原式=-1-(2-9)=-1 + 7=6.1. (1)解:14-25+ 13 = -11 +13 = 2 ;(2)解:-I,一 |2 3| + (一x 8 + :=-1-1+-X8X3 4=-2 + 6=4.2. (1)解:5 - (-0.25)-|-8|= 5 + 0.25-8-4=-3(2)解:17 - (2) + g + 3 x |1 (-2)2|=-1 -(-2)x:+3x |1 -4|= -l+-+3x32=8+:21 2 .4. 解:_25*xg+(_32) =_25x*xgx(_f=>(2)解:-14.(i-o5)x|+(-3)2 =-1-1x1 + 9 = -1-1 + 9 = .5. 解:8 + (-10) + (-2) - (-5)=8-10-2+5=(8+5) - (10+2) =13-12=1 (2)解:| 111 (+2 (2.75)=_2_2l+235244231 5 - 2 + 23=一5,94.解:1嘤x(-25)=(20-)x(-25)=20 x (-25)-x (-25)=-500+1=-499;解:一"(一$ + (-$x - 5|x2:=-1x(-18) + (-)x5x=4-5=-l.6. (1)解:23+ ( - 17) +6 - | - 221=6+6-22=-10:(2)解:5+(- | )x |= 5x(空)x?125=9,解:()x( - 24) 243=-;x(-24) + x(-24)-x(-24) /勺J=12-18+32=26;(4)解:-2匕(-5冈-? )+| 1 -1|=16x(- : )x(- ? )-( ; -1) DJO=T -14=T7. (1)解:22 + (-4) + (-2) + 4 = 22 + (-2) + 4 + (-4) = 22- 2 = 20 ;(2)解:(-1) x 5 + 28 + (-2) = -5-14 = -19 ;(3)解:16 + 22 + (-1)3 = 16 + 4-1 = 19 :(4)解:24x( 一竟+ ;6=24 X (-1) + 24 X 14- 24 X (-) = -20 + 9 - 2 = -13 .8. (1)解:原式=24+16 - 25 - 32= - 17(2)解:原式=:x Zxx=;22 24(3)解:原式=-4x5 + 8x:+l= - 20+1+1= - 18;(4)解:原式=(- + )x36 + 4x (6) 469=-7X 36-7X36 + x36-24 469=-9 - 30+32 - 24=-31.9. (1)解:22 + (-6) + (-2) + 6= 22-6-2 + 6=20(2)解:-11+ 22-(-3) x 11=-11 + 22 + 33=44解:(-24)乂6+ :-3)=(-24) x 1 + (-24) x : + (-24) x (一 卷)=-12-18 + 10=-20(4)解:48 + (-2)3 (-4) 一 3=48 + -8 + 4 - 3=48 + (-4) - 3=-12-3=-15(1)解:原式=6-9=-3;(2)解:原式=12+10+6=4;R7(3)解:原式=-48x ( - ) - (-48) x ( - ) + (-48) x Z812=24+30-28=26;(4)解:原式=48+ (-8+4)=484- (-4)=-1210. (1)解:原式=54x1-54x+54x ,= 45- 24 + 18 ,= 21 + 18 ,=39(2)解:原式=-1-0.5乂:乂(2-9),=T-那 x(-7),= -l-x(-7),= T+_ 1-6 011. (1)解:原式=-4-13-5 + 9 + 7=-22+16=6(2)解:原式=g x g x (27) (4 4-1) x 1=- 33=-312. (1)解:舄一2+,)x(-30)=3 x(-30) 一2 x (-30) +,x (-30)= -27 + 2-5= -30(2)解:一仔。2°-6x (一2 +(_5) x (-3)=-1 6x-+154Q= -l- - +153(1)解:(-4 ) 2020x (-0.25 ) 2021=(-4) x (-0.25) 2O2Ox (-0.25)= l2O2Ox (-0.25)=lx (-0.25)= -0.25;(2)解:19x(-8)16=(20)x (-8) 16= 20x (-8)(-8)16=-160+ - 2319=-2 ,13. (1)解:原式=(-2)+(+8)+(-8)=-2+0=-2;(2)解:原式=一x g O J=,16(3)解:原式=-g x (-36) ,x (-36) + : x (36)= 18 + 6-27=-3(4)解:原式=-1x(2+ 6)+ 10=-8+ 10=2(1)解:7 - (8) + (-4) =7+8-4= 15-4=11 ;(2)解:|-4|+23 + 3x(-5)= 4 + 8 15= 12-15=3 .14. 解:(-”(/)+W_3 _5_5_7_一2- 122 12=(_#1)+( W)= 1-1=0 ;(2)解:17 + (-2> x,- 1= -l-23xi-l 4= -1-2-1=-4 .15. (1)解:原式=26-18 + 5-16= 31-34=-3 ;(2)解:原式=7 + (-10)-(-27) + 9=-3 - (-3)=0 ;(3)解:原式=-(12x|+12x;-12x=-(8 + 3 - 10) =-1 .(4)解:原式=-1x(4 9) = -1+=.16. (1)解:原式=(-6) + 7-9 + 3=-5(2)解:原式=(-y) X (-2) X (-2) X (一专)=(一 £)x(-5)x(2)x(2)=2(3)解:原式=+=-2 + 1+- 3=-1 3(4)解:原式=-1 4 2=-75.计算(1) 8+ (-10)4-(-2)-(-5);211(2),一|一好|一(+2一(-2.75);(3) 19|x(-25); 一(一卷)+(-$ x|-5|x2?.6 .计算:(1) 23+ ( - 17) +6 - | - 2215-r ( -) x -S3( 一;+) x ( - 24)2 43- 24v ( - 5) X ( - 1 ) +| i - 1|.7 .计算题22 + (-4) + (-2) + 4(1) (-1)x 5 4- 28 (-2)16+ 2?+ (-(2) 24X(-:/(1)解:原式=-x (-36) + 5 x (36) - x (-36) = -18 30 + 3 = -45 ; 2612(2)解:原式=-1 X 5 (27) X - + 1 = -5 + 3 4- 1 = -1 .20. (1)解:原式二-4- 13 5+9+7=-22+16=-6;(2)解:原式=6- - 3.3 + 6 + 3- + 4 + 3.3 = 6-4-3-4-6 + 44- 3.3 3.3 =10+10+0=20; 4444(3)解:原式=18+2112=9;(4)解:原式=-9 : x : x ; = 9 : = 9.5 . 334221. (1)解:-5 + (-2)4 - 24 + (-2下=-5+16 - 16-J- ( - 8)=11+2=13:(2)解:C + m fx(-60)x (-60) 一 蔑 x (-60) 一 5 x (-60)=-3x15 - 5x10+11x4+7x5=-45 50+44+35=-16.22. (1)解:8-14-(-6)= 8 14 + 6= 8 + 6-14=0 ;(2)解:- 12-4 + (-$xg = -l + 4xgxg196=T+左171 25 ;(3)解:( + 1) x (-24)=2-24)-2-24)+卜(-24)=-6 + 20-9=5 ;(4)解:(-3)2 - (-51) x (-) x (-1)2021 = f(-y)2-(-7)x(-)x6x(-l)二3 23. (1)解:12-(-18)=12+18=30:(2)解:x : x 2 (一3%=-l-1x|x(2-9)=一: xg x (-7)=-1,-十61 =6,(3)解:G + W)x(-36)=3 x (-36) +(-36) -x (-36)=-18-30+21=-27;(4)解:(-2)3 + 8 2 x (-3) - (- 1)202。=-8-j-8+6-l=-1+6-1=4.24. (1)解:3-11+9-13=-8+(-4)=-12 ;c 4(2)解:-25+ - x - -r (-32) 45= _25x * x(Y)= -16x(-)1=一 ;(3)解:(1 -1 )+( -* )34212=(-12)= 1x(-12)-x(-12)-1x(-12)=-4 + 3 + 6=5 ;(4)解:-1£(i_o 5)x _ +(-3)228=27 ,(1)解:原式=7-4-5=-2;(2)解:原式=4-7+1=-2; 解:原式=(-81) x g x g x (一9)=1 ;(4)解:原式=- 16 + (1 - 9)+ (10 - 9)= 2 + 1=3 .26. (1)解:原式=-3 , -16 3 +12.5+2.5=-20+15=-5;(2)解:原式=-28+30 - 27+14=-11:(3)解:原式=(-100+ 卷)xl81 R=-1800+ -799(4)解:原式=| x ( - 18+13-4)=| x ( - 9)=-6.27. (1)解:99x5=(2-100) x5=-5001914=-499;19解:(-36)x(-g + L=16-30+21=7.28. (1)解:(+9) -(+10) +(-2) -(-8)+ 3=(+9) + (-10) + (-2) + 8 + 3=-1 + (2) + 8 + 3=-3 + 8 + 3=8解:i+(T)_(_§_那=1+ (_+:+(_”=1 + (一鸿)+ (那)=1 + (-1)+ 2=2(3)解:-3X备一 2x(一9+ 10x(一劫=3x(-A)-2x(-A) + 10x(-A)=(3-2+ 10)x(-)"T)=-6(4)解:C + W)x(_36)=x(-36)+x(-36)-x(-36)=-18 + (-30)4-21=-48 + 21=-2729. (1)解:3-(+1)-(-3) + 1 + (-4) =3+(-l)+3+l+(-4)=2;解:+(一吟(一(+5? + (+16=_4浮+ (_53+嗡=(一岭+ (-5,+(+16=-10+17=7:(3)解:(-3)x6-(-2)x1=-184-(-2)x 32=9x -29=2,(4)解:48 h- 4 X (-2) - (-4)=4848+4)=48-?(-4)=-12;(5)解:2 x (-3)2 - 5 + (-1) X (-2)=2x9-5x(-2)x(-2)=18-20=-2:(6)解:-I,-(1- 0.5) x 1 x 2 - (-3)2 «5=-1- 1 X 1 x(2-9)=-1- - x-7)6(1)解:-20- (-14) - (-18) -1=-20+14+18-1=11:(2)解:-21-12+33+12-67=-55:(3)解:-5-1 X (-6)t/ o=6 (4)解:(->:+5)x (-36)=-;x(-36)-1x(-36) + x(-36)=27+20-21=26;(5)解:18x(-”13x>4xg=1x(-18 + 13-4)=| x (-9)=-6;(6)解:24 T x 5 - (-3产=-16-1x(5-9)=-16 + ;x4 2=-16 + 2=-14(1)解: -20 - (-18) + (-14) + 13=-20 + 18-14+ 13=-34 + 31=-3 ;(2)解:- 1.25x0.4+ (一|)x(-8)= -x-x-x8 452=-10 ;(3)解:| 1| (+2) (2.75)239 , 11=-5244(4)解:-42x(AV +今= -42x-(-42)x+(-42)x =-7 + 9-12 =-10 ;解:-吟x5= -(10-)x5 =-(10 x 5-x5) = -(50-) (6)解:一1,一 g + (1 0.8 x + (7 - 3?)=-1-(-0.8-0.2)=-1 + 1=0 .30. (1)解:原式=-9-10-2+8=-13;(2)解:原式= 5-1=4:(3)解:原式=1 - 1 x (7-16)=1 - - x ( - 9) 3(4)解:原式=-27x g x g +4+ g=-4+4 34.解:.8 + 7-2 2 x (-3)+ 4沁.(心)+T)2113-4-38381=2,-9x4 7-9x4 7 =(-48) x () x - x - I ' I 12, 7 4-(-4)x1=9 x2x:x,V 344=3 .8(-24)x(-: + :-/=2”(»渭)= -x 24-x 24 + -x 24243=12-18+8=2:-I4 -1-(1- 0.5 x 1) x 6=-l-l-(l-|x1)x6=-1 - (1 -) x 6=-1 - - x 6 6=-235.解:(-) - (+0.2) + 1 =(- 1.2)- 0.2 + 1=-0.4 6 - (+3) - (-4) + (-2)=6 + (-3) + 4 + (-2)=6 + 4 + (-3) + (-2)=5(65)x(-2)+ (- + (-13)131=(一亍)x(-2) x(2)x(一云)=2(-48) + (+:) + (-12) X :417=(-48)x-x(-)x- 12 - 7 x (-4) + 8 (-2)= 12- (-28) + (-4)=36-91x818= (_9-)x818=-9 x 81 - -x 81=-729-72=-80123 57=(一广运636357=x36 x36 + x 36 ixJL /=-27-20 + 21=-26-(-I4) + (-2产-(-3)2 - 23=1 +4-9-8=12 .36.解: 18 | - 2| 4- (-3)2 X 1=18-2+9x 13=18-2+3=19: 16+(-25)+24+(-15)=(16+24) + (-25) + (-15)=40+ (-40)=0;一劫=- x (60)卷 x (60) +1 x (60) 3 x (60)=-35+16+ (-50) +45=-24;(4) 48 4- 4 X (2) (4)=48引(-8) +4=48+ (-4)=-12; -y + 3x(_4) + (一x7=-l+3x4x - x7 4=-1+147=146;-99x (+14)=(-100+ T ) xl4=-1400+2=-1398;-15.45 x 2- + 4.05 x (-2) - 6.5 x (-2)=-15.45 x 2 - - 4.05 x 2 - 4- 6.5 x 2 - 131313=(-15.45 - 4.05+ 6.5) x 2 卷= (-13)x 段=-3137. (1)解:原式=-20-5 + 18 ,=-25+ 18 ,=-7(2)解:原式=-4-14- (-81) (»3 . 517 , 43=11,2424= (一£) + (*),=(-10) + 12 ,=2(3)解:原式=-81 x x 4- (16),= -36x; +(-16),=- 16 + (-16),=1(4)解:原式=-1 x (-24) - x (-24) + x (-24),36o8 .计算24-(-16)+ (-25)- 32(2)(-1)x2 2x(-1)(3) -22x5-(-2)3xi+l§+(_y +(_2)2 x(-6).计算:(1) 22 + (-6) + (-2) + 6-11+ 22-(-3)X11(2) (-24)x(升 R 勺48 -5- (-2)3 - (-4) - 39 .计算:(1) |-6|-18 + 94x (-3) -5x (-2) +6(2) (-48) x(W + 捻48v (-2) 3- (-4)38.(+3)+ (-5)-4-(-2) = 3-5-44-2 =-4 ;(2)1 + (-2) +|-2-3|-5=1-2+5-511/1、35X (-) X X - 5 1 6, 11 4(-81)+">(-16) =-81X 区 x(.) =1; 4 x (-3)-5x (-2) + 6=-12 + 10 + 6=4;(6) 2 2 -: x 5=-48 ; (»3+34)表)G-3+W)x(-36)=;x (-36)- 3 x (-36) + -x (-36)-x (-36) 2612=-18 + 108-30 + 21=81;(一表)+(2 +台 (一-制118 ,(1)解:(-8) - (+8) - (-10)=-8-8 + 10=-6 ;(2)解:-54x2*(-4:)x:_ .9/ 2、2= -54x-x(-)x-=6 ;(3)解:-24乂(3-; + 3)=-24x- + 24x-24x- 346=-8 + 18 4=6 ;(4)解:-4 x (8) + (-8) x (-8$ + 12 x (-89=(-4-8 +12) x (-8)=0 ;(5)解:- V -i-(i- 0.5 x 1) x 6=-1-1-(6-1)=-1-(-4)=3 .39. (1)解:-7 +13-6 + 20=-13+33=20;(2)解:汨4139=1 Hr -7575=1-1+2=2;(3)解:81+ ( ;)x : . (-16) 4941=-81x (4) x - x ()916(4)解:-24x(-渭-=-1 X (-24) + x (-24) -1 x (-24)=12-18 + 8=2;(5)解:8- (-2) = 15x (-3) - (-5) 2=8-4x (-3) -25=8+12-25=-5;(6)解:|0.8 - l|1011=X325521=15511 .计算:(1)54x(泻+ ;-I2016 -(1 - 0.5) x x 2 - (-3) 19 X (-8)16(2) -I2016 -(1 - 0.5) x x 2 - (-3) 19 X (-8)16.计算:(1) (-4) - (+13) + (-5) - (-9) + 7(2)(一 4 3 X (-3)3 -(-22+1)X (-1)202。13.计算:舄-七+於(-30);-l2020 - 6 x (一2 +(_5) x (-3).14.简便计算(1) (-4)2020 x(-0.25)2021(1) (-2)+(+8)+(-8)/ 、1/ 3、3(2)3 X(-3 ";(W + + X (-36)(4) -I2 x 2 - (-6) - 30 + (-3).计算:(1) 7 - (-8) + (-4);(2) |-4| + 23+ 3x(-5).16 .计算:(1)(一+(-$+3+(七);(2) -l2 + (-2)3X7-l .4(1) (+26)4-(-18)4-5-16(2) 7 + 5x(-2)-(-3)3-912x(*)(4) -1 -7X 4-(-3)2619.计算(-6) - (-7) - (+9) + 3(1) (6.5)x(-2) +(一+ (-13)(4) 一V一 (一2产+ 6x( g).计算. G + >$x(-36);(2) -12x5-(-3)3x+120 .计算(-4) - (+13) + (-5) - (-9) +7(1) 6: - 3.3 - (-6) - (-3+ 4 + 3.3(+x24(2) -32- (1- I ) v3x ( - ) 232(1) -5 + (-2) -I4- (1-0.5) x * (-3) 2. - 24 -r (-2)3 ; C + *_q_fx(_60) 23 .计算:(1) 8-14- (-6)-12-4 4-(-)x|(;* +X(-24)(-31)2-(-51) x (-劫力 x (-1)202124 .计算:(1) 12 - (-18)<2) ,i4-(1-0,5) X 3 x 2 (-3)2 G + W)x(-36)(4) (-2)3 + 8 2 X (-3) - (-1)202025.计算:(1) 3-11+9-13;(2 ) -25+ - x 4- (-32); 45(3)(工一;)( -三); 34212q 4(3 ) (-81)-r-X-r (-16) 49(4)-241-(-3)2 + (|-1)x1527.慧心算一算(1) ( - 3) +12.5+ ( - 16) - ( - 2.5)7 t: Q 7(2) ( 7 +)x ( - 36)9 6 4 18(3) - 99 竺 X181927218x ( - - ) +13X - - 4x -.333.简便计算:(1)-99x5(2) (-36)x(ff28 .计算:(1) (+9) - (+10) + (-2) - (-8) + 3 ;(2) 1 + (一-(-9咛 + 3-3xA-2x(-A) + iox(-A); G + W)x(-36).计算:(1) 3 (+1) (3) + 1 + (4)(2)+(-46-(一-(+5+ (+喷)(3) (3) X 6 + (2) x :(4) 48 -? 4 X (-2) - (-4)2 x (-37 - 5 + (-J x (-2)(5) -I4 - (1 - 0.5) x 1 x 2 - (-3)21.计算以下各题:(1) -20- (-14) - (-18) -1-21-12+33+12-67 *T(-6)(W + $x(-36)(5) 18x( - , + 13x; - 4x: