初中数学计算题（200 道）初中数学计算题（200 道）(-1.5) X(-9)- 12+(-4)56+(-7)- 2-5+0.43.57 X 29+(-4)5.6+(-2.8)-(- 50)+2[9.6+(- 7.3)] X [( -5)-(-7)]12.3+[5.6+( -1.2)](- 75.6) +(1/4+1/5)9.5X(-9.5) +1/2 95.77+(-2)+(-34.6)(- 51.88) +2-(- 5)X241.25* (-3)+70*(-5)+5*(-3)+259999*3+101*11*(101-92)(23/4-3/4)*(3*6+2)3/7 X 49/9 - 4/38/9 X 15/36 + 1/2712X 5/6 - 2/9 X 38X 5/4 + 1/46+ 3/8 —3/8 + 64/7 X 5/9 + 3/7 X 5/95/2 - (3/2 + 4/5 )7/8 + (1/8 + 1/9 )9 X 5/6 + 5/6初中数学计算题（200 道）3/4 X 8/9 - 1/37 X 5/49 + 3/146 X(1/2 + 2/3 )8 X 4/5 + 8 X 11/531 X 5/6 - 5/69/7 - ( 2/7 - 10/21 )5/9 X 18 - 14 X 2/74/5 X 25/16 + 2/3 X 3/414 X 8/7 - 5/6 X 12/1517/32 —3/4 X 9/243 X 2/9 + 1/35/7 X 3/25 + 3/73/14 X 2/3 + 1/61/5 X 2/3 + 5/69/22 + 1/11 - 1/25/3 X 11/5 + 4/345 X 2/3 + 1/3 X 157/19 + 12/19 X 5/61/4 + 3/4 - 2/38/7 X 21/16 + 1/2101 X 1/5 —1/5 X 2150+ 160-40120-144- 18+35347+45X2-4160- 5237X( 58+37) + ( 64-9 X 5)95+( 64-45)178-145- 5X 6+42 812-700+( 9+31X 11)85+14X( 14+208+ 26)120-36X 4+18+35(58+37)+( 64-9X 5)(6.8-6. 8X 0.55) + 8.50.12 X 4.8 + 0.12 X 4.8( 3.2 X 1.5+2.5 )+ 1.66-1.6 + 4= 5.38+7.85 -5.37=7.2 +0.8 -1.2X 5= 6-1.19 X3-0.43= 6.5 X( 4.8-1.2 X 4)=5.8 X( 3.87-0.13 )+4.2X 3.7432.52- (6+9.728+3.2 )X 2.5[ ( 7.1-5.6 )X 0.9-1.15] + 2.5 5.4 + [2.6 X( 3.7-2.9 )+0.62]12X 6+( 12-7.2 )-612X 6+ 7.2 -60.68 X 1.9+0.32 X 1.958+370)+( 64-45)420+580-64X 21+28136+6X( 65-345+23)15-10.75 X 0.4-5.718.1 +( 3-0.299 - 0.23 ) X 1 (6.8- 6.8 X 0.55) - 8.50.12 X 4.8 - 0.12 X 4.8(3.2 X 1.5+2.5 ) - 1.63.2 X 6+ (1.5+2.5 ) - 1.60.68 X 1.9+0.32 X 1.910.15- 10.75X 0.4 -5.75.8 X( 3.87-0.13 )+4.2X 3.74 32.52- (6+9.728 - 3.2 ) X 2.5 [(7.1-5.6 ) X 0.9-1.15] - 2.5 5.4 - [2.6 X( 3.7-2.9 ) +0.62]12X6-( 12-7.2 ) -612X 6-7.2 -633.02-( 148.4 - 90.85 - 2.576. (25%-695%-12%)*3677. /4*3/5+3/4*2/578.1-1/4+8/9/7/979. +1/6/3/24+2/2180. /15*3/581.3/4/9/10-1/682. /3+1/2)/5/6-1/3]/1/783. /5+3/5/2+3/484. (2-2/3/1/2)]*2/5初中数学计算题(200 道)85.+5268.32-256986.3+456-52*887.5%+632588./2+1/3+1/489+456-785%+. 3/7 X 49/9 - 4/39 X 15/36 + 1/272X 5/6 - 2/9 X33X 5/4 + 1/494 - 3/8 - 3/8 -695/7 X 5/9 + 3/7 X 5/96/2 - (3/2 + 4/5 )8 + (1/8 + 1/9 )8 X 5/6 + 5/61/4 X 8/9 - 1/310 X 5/49 + 3/141.5 X(1/2 + 2/3 )2／9 X 4/5 + 8 X 11/53.1 X 5/6 - 5/64/7 - ( 2/7 -10/21 )19 X 18 - 14 X 2/75 X 25/16 + 2/3 X 3/44 X 8/7 - 5/6 X 12/157/32 —3/4 X 9/242/3 -1/2 —1/4 X 2/52 -6/13 - 9/26 —2/32/9 + 1/2 - 4/5 + 3/810 -5/9 + 1/6 X 41/2 X 2/5 + 9/10 - 9/205/9 X 3/10 + 2/7 - 2/51/2 + 1/4 X 4/5 —1/83/4 X 5/7 X 4/3 —1/223 —8/9 X 1/27 - 1/278X 5/6 + 2/5 -41/2 + 3/4 X 5/12 X 4/58/9 X 3/4 —3/8 - 3/45/8 - 5/4 + 3/23 - 9/111.2 X2.5+0.8 X 2.58.9X1.25-0.9X1.2512.5X 7.4X 0.89.9 X 6.4- （2.5+0.24 ）（27）6.5 X 9.5+6.5 X 0.5 0.35 X 1.6+0.35 X 3.40.25 X 8.6 X 46.72-3.28-1.720.45+6.37+4.555.4+6.9 X 3- （25-2.5 ）2X 41846-620-3804.8 X 46+4.8 X 540.8+0.8 X 2.51.25X3.6X8X2.5 -12.5X2.428X12.5-12.5X2023.65- (3.07+3.65 )(4+0.4X0.25)8X7X1.251.65X 99+1.6527.85- (7.85+3.4 )48X1.25+50X1.25X0.2X87.8X9.9+0.78 (1010+309+4+681+6)X 12 3X 9146X 782X 6X 8545.15X7/8+6.1 -0.606253/7 X 49/9 - 4/38/9 X 15/36 + 1/2712X 5/6 - 2/9 X 38X 5/4 + 1/46- 3/8 —3/8 - 64/7 X 5/9 + 3/7 X 5/95/2 - (3/2 + 4/5 )7/8 + (1/8 + 1/9 )9. 9 X 5/6 + 5/63/4 X 8/9 - 1/37 X 5/49 + 3/14初中数学计算题（200 道）6 X( 1/2 + 2/3 )8 x 4/5 + 8 x 11/531 x 5/6 - 5/69/7 - ( 2/7 - 10/21 )5/9 x 18 - 14 x 2/74/5 x 25/16 + 2/3 x 3/414 x 8/7 - 5/6 x 12/1517/32 —3/4 x 9/243 x 2/9 + 1/35/7 x 3/25 + 3/73/14 x 2/3 + 1/61/5 x 2/3 + 5/69/22 + 1/11 - 1/25/3 x 11/5 + 4/345 x 2/3 + 1/3 x 157/19 + 12/19 x 5/61/4 + 3/4 - 2/38/7 x 21/16 + 1/2101 x 1/5 —1/5 x 2150+ 160-40 (58+370) + ( 64-45)120-144- 18+35347+45x2-4160- 52(58+37)-( 64-9 x 5)95-( 64-45)8 / 33178-145+ 5X 6+42 420+580-64 X 21-28812-700 -( 9+31X 11) (136+64)X( 65-345 - 23) 85+14X( 14+208- 26)(284+16)X( 512-8208 - 18)120-36 X 4-18+35(58+37)-( 64-9 X 5)(6.8- 6.8 X 0.55) - 8.50.12 X 4.8 - 0.12 X 4.8(3.2 X 1.5+2.5 ) - 1.6 (2) 3.2 X( 1.5+2.5 ) - 1.6 6-1.6 - 45.38+7.85-5.377.2 - 0.8-1.2 X 56-1.19X3-0.4347.6.5 X(4.8-1.2 X 4)0.68X1.9+0.32 X1.948.10.15- 10.75X0.4-5.749.5.8 X(3.87-0.13 )+4.2X 3.7450.32.52- (6+9.728 - 3.2 ) X 2.551.[ (7.1-5.6 ) X 0.9-1.15] -2.552.5.4 - [2.6 X( 3.7-2.9 ) +0.62]53.12 X 6-( 12-7.2 ) -6 (4 ) 12X 6-7.2-6102X(-4.5)-(- 3) X(-5) -27.8X6.9＋2.2X6.9(-2)+2-(- 52)X(-1) X5+87-(-3)X(-1)5.6 X 0.258 X( 20- 1.25 )(-7.1) X〔(-3) X (-5)丨+ 2 -2.5 X(-4.8) X (0.09) -(-0.27) 127+352+73+44X( -2) 89X276+(-135)-3325X 71+75-29 -88-(-2)243+89+111+579405-2940- 28X 21920-1680- 40- 7690+47X 52-398148+3328- 64-75360X 24- 32+7302100-94+48X 5451+(2304-2042)X 234215+( 4361-716)- 81( 247+18)X 27- 2536-720- (360-18)1080-( 63-54)X 80( 528+912)X 5-61788528-41X 38-904264+318-8280- 69(174+209)X 26- (9000八0)814- (278+322) -151406+735X 9- 453168-7828+ 38+504796-5040 -( 630- 7)285+ (3000-372) - 361+5/6-19/123x(-9)+7x(-9)(-54)x1/6x(-1/3)I. 18.1 + ( 3-0.299 - 0.23 ) X 12.(6.8- 6.8 X 0.55) - 8.53.0.12 X4.8 - 0.12 X 4.843.2 X 1.5+2.5 + (-1.6)(-2 ) X 3.2 X( 1.5+2.5 ) - 1.65.6- 1.6 -4+(6.8 -9)5.38+7.85- 5.37 - 896.7.2 - 0.8-1.2 X 56-1.19X3-0.437.6.5 X(4.8-1.2 X4)0.68X1.9+0.32 X1.98.10.15- 10.75X0.4-5.79.5.8 X(3.87-0.13 )(- 8.01)+4.2 X3.7410.32.52- (6+9.728 - 3.2 ) X 2.5 II. [ (7.1-5.6 ) X 0.9-1.15] -2.512.5.4 - [2.6 X( 3.7-2.9 ) +0.62]13.12 X 6-( 12-7.2 ) -614.12 X 6-7. 2-615.33.02 —( 148.4 —90.85 ) - 2.5(-5)-252 X(-78 )(-6) X (-2)+3 -( 5+50)7-7+3-6- ( -90 )(-8)(- 3)X(-8)X25(7+13) -(-616) + (-28)(8+14-100-27 ) - 4(- 15) -(-1)- 101-1016-0.21 X(-8) X(4.1+5.9)(- 10) X(-2) X 4-{-9-[6+( -5.67)]}(-18)(- 4)2X[8.01 X( -3.14)9-32{-890- [79+8.1] X9}(-20)-23+(- 9) X 9.42(- 24)3.4 X104-(-5) X200.96[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3) 5+21*8/2-6-59 68/21-8-11*8+61-2/9-7/9-564.6- (-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1) + V 92/(-2)+0/7-(-8)*(-2) (1/4-5/6+1/3+2/3)/1/2 18-6/(-3)*(- 2) X 2A7(5+3/8*8/30/(-2)- V36 (-84)/2*(-3)/(-6) 1/2*(-4/15)/2/31+2+3+4+ .... +1000001/1+1/2+1/3+ ..... 1/501+1/2+1/4+1/8+1/16+ .... 1/5123+9+27+81+243+ (9999)1+1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90 8－2X 32－(-2 X 3)2—12 X (-3)2 —(-1/2)2003 X (-2)2002 - 2/9 (0.5-3/2) - 3/1 X [-2-(-3)3] —I 1/8 —0.52 I[-38-(-1)7+(- 3)8] X -53aA3-2bA3+ab(2a-b)- V a-bA2 15*(-8)+2bA2+(xA2+yA2)A2-4y(xA2+yA2)+4yA26-3aA8-(-5A2-6) (xA2+2x)A2+3(xA2+2x)+xA2+2x+3(a+1)(a+2)+(2a+1)(a-2)-12 xA2(y+z)A2-2xy(x-z)(y+z)+yA2(x-z)A23(a+2)八2+28(a+2)-20(a+b)A2-(b-c)A2+a A2-c A28x(x+1)(x A2+x-1)-2xA2(x-1F2-3(xA2-x)-5614a(a-b)+(a-bF211.-ab(a-b)A+a(b-a)A212.3 (x+2)－2x=5－4x13.5 (x+2a)-a=2(b-2x )+4a3.14*3.42 (2)972*3.14*1/4 [-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3) 5+21*8/2- V121-5968/21-8-11*8+61-2/9-7/9-564.6- (-3/4+1.6-4-3/4)1/2+3+5/6-7/12[2/3-4-1/4*(-0.4)]/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(|-2|-5A4)(1/3+2/3)/1/2-|-9+(-5)|18-6/(-3)*(-2)-|-9|(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6) 1/2*(-4/15)/2/3 |-3x+2y-5x-7y|-|-9x+2y| -5+21*8/2-6-59 68/21-8-11*8+61 -2/9-7/9-564.6- (-3/4+1.6-4-3/4) 1/2+3+5/6-7/12 [2/3-4-1/4*(-0.4)]/1/3+2 22+(-4)+(-2)+4*3- V 64-5八2-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12) (-28)/(-6+4)+(-1) 2/(-2)+0/7-(-8)*(-2) (1/4-5/6+1/3+2/3)/1/2 18-6/(-3)*(-2) (5+3/8*8/30/(-2)-3 (-84)/2*(-3)/(-6) 1/2*(-4/15)/2/3+ V9-3x+2y-5x-7y+ -5+21*8/2-6-5968/21-8-11*8+61 -2/9-7/9-564.6- (-3/4+1.6-4-3/4)1/2+3+5/6-7/12 [2/3-4-1/4*(-0.4)]/1/3+2 22+(-4)+(-2)+4*3 -2*8-8*1/2+8/1/8 (2/3+1/2)/(-1/12)*(-12) (-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)*(-2) (1/4-5/6+1/3+2/3)/1/2 18-6/(-3)*(-2) (5+3/8*8/30/(-2)-3 (-84)/2*(-3)/(-6) 1/2*(-4/15)/2/3-3x+2y-5x-7y-(-3八2+5八7) -1+2-3+4-5+6-7+ V 9 -50-28+(-24)-(-22) -19.8-(-20.3)-(+20.2)-10.8; 0.25- +(-1 )-(+3 ). -1-23.33-(+76.76) 1-2*2*2*2-5A2+(6A2-5A2) (-6-24.3)-(-12+9.1)+(0-2.1) -1+8-7+5A7-(-5+ V9)125*3+125*5+25*3+25 9999*3+101*11*(101-92) (23/4-3/4)*(3*6+2)3/7 X 49/9 - 4/38/9 X 15/36 + 1/2712x*5/6y - 2/9y*|3x-2y|8X 5/4+1/4*| -7-8|6- 3/8 —3/8 - 64/7 X 5/9 + 3/7 X 5/95/2 - (3/2 + 4/5 )7/8 + (1/8 + 1/9 )9 X 5/6 + 5/63/4 X 8/9 - 1/37 X 5/49 + 3/146 X(1/2 + 2/3 )8 X 4/5 + 8 X 11/531 X 5/6 - 5/69/7 - ( 2/7 - 10/21 ) 5/9 X 18 - 14 X 2/74/5 X 25/16 + 2/3 X 3/4 14 X 8/7 - 5/6 X 12/15 17/32 —3/4 X 9/243A45 X 2/9 + 1/35/7 X 3/25 + 3/73/14 X 2/3 + 1/61/5 X 2/3 + 5 /65/3 X 11/5 + 4/39/22+1/11 - 1/2- V16945八8 X 2/3 + 1/3 X 15 7/19 + 12/19 X 5/61/4 + 3/4 - 2/38/7 X 21/16 + 1/2101A4X(-1/5 —1/5 X21)50+ V160- 40A5120-144- 18+35347+45X2-4160- 5237八2 (58+37) + ( 64-9 X 5)95+( 64-45)178-145- 5X 6+42812-700+ ( 9+31X 11)85+14X( 14+208+ 26)120-36X 4+18+35(58+37)+( 64-9X 5)(6.8- 6.8 X 0.55) + 8.50.12 X 4.8 + 0.12 X 4.8( 3.2 X 1.5+2.5 )+ 1.66-1.6 + 4= 5.38+7.85 -5.37=7.2 +0.8 -1.2X 5= 6-1.19 X3-0.43=6.5 X( 4.8-1.2 X 4)=5.8 X( 3.87-0.13 )+4.2X 3.7432.52- (6+9.728+3.2 )X 2.55.4 - [2.6 X( 3.7-2.9 ) +0.62] 12X6-( 12-7.2 ) -6 12X 6-7.2 -6 0.68X1.9+0.32X1.9 58+370)-( 64-45)420+580-64X21-28 136+6X(65-345-23)15-10.75X0.4-5.718.1 ＋(3－0.299-0.23)X1 (6.8- 6.8 X 0.55) - 8.5 0.12X初中数学计算题 （200 道 ）[(7.1-5.6 ) X 0.9-1.15]- 2.518 / 334.8 -0.12X 4.8 (3.2X 1.5+2.5)-1.6 3.2X 6+(1.5+2.5 )-1.60.68X 1.9+0.32X 1.9 10.15-10.75X 0.4-5.7 5.8X(3.87-0.13 )+4.2X 3.74 32.52- (6+9.728-3.2)X 2.5 [(7.1-5.6 )X 0.9-1.15] -2.55.4-[2.6 X (3.7-2.9 )+0.62] 12X 6-( 12-7.2 )-6 12X 6-7.2 -6 33.02－(148.4－90.85)-2.5 76.(25%-695%-12%)*36初中数学计算题（200 道）7/4*3/5+3/4*2/51-1/4+8/9/7/97+1/6/3/24+2/218/15*3/53/4/9/10-1/68/3+1/2)/5/6-1/3]/1/79/5+3/5/2+3/48八6(2-2/3/1/2)]*2/58+5268.32-25693+456-52*887.5%+63258/2+1/3+1/489+456-785%+. 3/7 X 49/9 - 4/39 X 15/36 + 1/272X 5/6 - 2/9 X33X 5/4 + 1/494 - 3/8 - 3/8 - 695/7 X 5/9 + 3/7 X 5/96/2 - (3/2 + 4/5 )8 + (1/8 + 1/9 )1/4 X 8/9 - 1/310X 5/49 + 3/14初中数学计算题（200 道）1.5 X( 1/2 + 2/3 )8 X 5/6 + 5/62/ 9 X 4/5 + 8 X 11/53.1 X 5/6 - 5/64/7 - ( 2/7 - 10/21 )19 X 18 - 14 X 2/75 X 25/16 + 2/3 X 3/44 X 8/7 - 5/6 X 12/157/32 —3/4 X 9/242/3 -1/2 —1/4 X 2/52 -6/13 - 9/26 —2/32/9 + 1/2 - 4/5 + 3/810 -5/9 + 1/6 X 41/2 X 2/5 + 9/10 - 9/205/9 X 3/10 + 2/7 - 2/51/2 + 1/4 X 4/5 —1/83/4 X 5/7 X 4/3 —1/223 —8/9 X 1/27 - 1/2718X5/6 + 2/5 -411/2+3/4X 5/12X4/58/9 X 3/4 —3/8 - 3/45/8 - 5/4 + 3/23 - 9/1112.5X7.4X0.820 / 33初中数学计算题（200 道）1.5 X( 1/2 + 2/3 )1.2X2.5+0.8 X 2.58.9X1.25-0.9X1.2512.5X7.4X0.821 / 33初中数学计算题（200 道）9.9 X 6.4- (2.5+0.24 )6.5 X 9.5+6.5 X 0.50.35X1.6+0.35 X3.40.25X8.6X46.72-3.28-1.720.45+6.37+4.555.4+6.9 X3-(25-2.5 )2X 41846-620-3804.8X 46+4.8X 540.8+0.8 X2.51.25X3.6X8X2.5 -12.5X2.428X12.5-12.5X2023.65- (3.07+3.65 )( 4+0.4X 0.25 )8X 7X 1.251.65 X 99+1.6527.85- (7.85+3.4 )48X1.25+50X1.25X0.2X87.8 X 9.9+0.78(1010+309+4+681+6)X 123X 9146X 782X 6X 8545.15X7/8+6.1 -0.606253/7 X 49/9 - 4/38/9 X 15/36 + 1/2712X 5/6 - 2/9 X 3初中数学计算题（200 道）8X 5/4 + 1/46- 3/8 —3/8 - 64/7 X 5/9 + 3/7 X 5/95/2 - (3/2 + 4/5 )7/8 + (1/8 + 1/9 )9 X 5/6 + 5/63/4 X 8/9 - 1/37 X 5/49 + 3/146 X(1/2 + 2/3 )8 X 4/5 + 8 X 11/531 X 5/6 - 5/69/7 - ( 2/7 - 10/21 )5/9 X 18 - 14 X 2/74/5 X 25/16 + 2/3 X 3/414 X 8/7 - 5/6 X 12/1517/32 —3/4 X 9/243 X 2/9 + 1/35/7 X 3/25 + 3/73/14 X 2/3 + 1/61/5 X 2/3 + 5/69/22 + 1/11 - 1/25/3 X 11/5 + 4/345 X 2/3 + 1/3 X 157/19 + 12/19 X 5/6初中数学计算题 （200 道 ）1/4 + 3/4 - 2/3 24 / 338/7 X 21/16 + 1/2101 X 1/5— 1/5 X 21 50+ 160-40 (58+370) + ( 64-45)120-144 - 18+35347+45X2-4160- 52(58+37)-( 64-9 X 5)95-( 64-45)178-145- 5X 6+42 420+580-64 X 21-28812-700-(9+31X 11)(136+64)X( 65-345-23)85+14X( 14+208- 26)(284+16)X( 512-8208-18)120-36X 4-18+35(58+37)-( 64-9X 5)(6.8- 6.8 X 0.55) - 8.50.12 X 4.8 - 0.12 X 4.8( 3.2 X 1.5+2.5 )- 1.63.2 X( 1.5+2.5 )- 1.66-1.6 - 4= 5.38+7.85 -5.37=7.2-0.8-1.2X 5= 6-1.19X3-0.43=6.5 X( 4.8-1.2 X 4)= 0.68 X 1.9+0.32 X 1.910.15- 1 0.75 X 0.4 -5.75.8 X( 3.87-0.13 )+4.2X 3.7432.52- (6+9.728 - 3.2 ) X 2.5[(7.1-5.6 ) X 0.9-1.15] - 2.55.4 - [2.6 X( 3.7-2.9 ) +0.62]12X6-( 12-7.2 ) -6 (4) 12X6-7.2-6 102八2 X 4.5+8八5- V5297.8 X 6.9 ＋2.2X 6.95.6X 0.258X( 20－1.25 )127+352+73+4489+276+135+3325+71+75+29 +88243+89+111+579405-2940- 28X 21920-1680-40-7690+47X 52-398148+3328- 64-75360X 24- 32+7302100-94+48X 5451+( 2304-2042 )X 234215+( 4361-716 )- 81( 247+18)X 27- 2536-720- ( 360- 18)1080-( 63-54 )X 80( 528+912)X 5-61788528+ 41 X 38-904264+318-8280+ 69 (174+209)X 26- 9000 814- (278+322)+ 15 1406+735X 9+ 45 3168-7828+ 38+504 796-5040+(630+ 7)285+(3000-372)+ 36 1+5/6-19/12 3x(-9)+7x(-9 (-54)x1/6x(-1/3)18.1 ＋(3－0.299 + 0.23 )X 1 (6.8- 6.8 X 0.55) + 8.50.12 X 4.8 + 0.12 X 4.8 (3.2 X 1.5+2.5 )+ 1.63.2 X(1.5+2.5 )+ 1.6 5.6- 1.6 + 4 5.38+7.85-5.377.2 + 0.8 -1.2 X 56-1.19 X3-0.436.5 X(4.8-1.2 X 4)0.68 X 1.9+0.32 X 1.9 115-10.75 X 0.4 -5.75.8 X(3.87-0.13 )+4.2 X 3.7432.52- (6+9.728 - 3.2 ) X 2.5[(7.1-5.6 ) X 0.9-1.15] - 2.55.4 - [2.6 X( 3.7-2.9 ) +0.62]12X6-( 12-7.2 ) -612X 6-7.2 -633.02－(148.4－90.85)-2.5二. 解方程2x=7(x-5)8(3x+3)=2404.74+4x-2.5x=8.1(2.81+x) -2.81=115x-30=16(x-2)(-3)A3-3A3(-1)八2-5.62八2+3八3-4八4(2八4-3八2)八3-5八5[(1.6八2-2八3)-2.1]八2(5.66 X2)A2 -15A2(-15)Ax=225,x=?[(-4)A2- 4A2] X 2A2[(-5.6)A2+3]A2[5.6A2+(- 5.6)A2] X(-1)A23x+28-x=561.5x+6=3.752(3.6x+2.8)=-1.69.5x+9.5=1918(x-35)=-36x+7-(-36+8八2)/2=8+7八4/3a-7-98+7a=3.2*5a89/2+35/6x=3*9+2八3/5+7X 3X+189/3=521/2 4Y +119杯3=22/113X*189=5*4A5/38Z/6=458/53X+77=594Y-6985=8187X*13=5 7Z/93=41 15X+863-65X=54 58Y*55=274897(2x-1)-3(4x-1)=4(3x+2)-1 (5y+1)+ (1-y)= (9y+1)+ (1-3y) [-6(-7A4*8)-4]=x+2 20%+(1-20%)(320-x)=320 X 40% 2(x-2)+2=x+12(x-2)-3(4x-1)=9(1-x) 11x+64-2x=100-9x 15-(8-5x)=7x+(4-3x) 3(x-7)-2[9-4(2-x)]=223/2[2/3(1/4x-1)-2]-x=22x+7八2=1571) 判断题：判断下列方程是否是一元一次方程：①-3x-6x2=7()③5x+1-2x=3x-2 ()④3y-4=2y+1.()判断下列方程的解法是否正确：①解方程3y-4=y+3解：3y-y=3+4,2y=7,y=3.5②解方程：0.4x-3=0.1x+2解：0.4x+0.1x=2-3;0.5x=-1,x=-2③解方程解：5x+15-2x-2=10,3x=-3,x=-1;④解方程解：2x-4+5-5x=-1,-3x=-2,x= .( )2) 填空题：(1)若2 (3-a) x-4=5是关于x的一元一次方程，则_(2)关于x 的方程ax=3 的解是自然数，则整数 a 的值为_(3)方程5x-2(x-1)=17 的解是_(4)x=2 是方程2x-3=m- 的解，则m=_ .(5)若-2x2-5m+1=0是关于x的一元一次方程，则m=_ . ( 6)当y=_ 时，代数式5y+6 与3y-2 互为相反数.(7)当m=_ 时，方程的解为0.(8)已知0.则关于x 的方程3ab-(a+b)x=(a-b)x的解为_____ 3) 选择题：(1)方程ax=b 的解是( ) .A. 有一个解x= B .有无数个解C. 没有解D .当0时，x=( 2)解方程( x-1)=3, 下列变形中，较简捷的是(A. 方程两边都乘以4，得3( x-1 ) =12B. 去括号，得x- =3C .两边同除以，得x-1=4D. 整理，得( 3)方程2- 去分母得( )A.2-2(2x-4)=-(x-7)B.12-2(2x-4)=-x-7C. 12-2(2x-4)=-(x-7)D. 以上答案均不对( 4)若代数式比大1，则x 的值是( ).A．13 B．C．8 D．(5)x=1.5 是方程( )的解.A.4x+2=2x-(-2-9)B．2{3[4(5x-1)-8]-2}=8C.4x+9 =6x+64) 解答下列各题：(1)x 等于什么数时，代数式的值相等？( 2)y 等于什么数时，代数式的值比代数式的值少3？(3)当m等于什么数时，代数式2m-的值与代数式的值的和等于5? （4）解下列关于x 的方程：①ax+b二bx+a;（a 工b）;三. 化简、化简求值化间求值:1、-9（x-2）-y（x-5）（1）化简整个式子。