初一数学计算题

(1) 9*27 (3) (-2)-8-14-13 (4) (-7)*(-1)/7+8 (5) (-11)*4-(-18)/18 (6) 4+(-11)-1/(-3) (7) (-17)-6-16/(-18) (8) 5/7+(-1)-(-8) (9) (-1)*(-1)+15+1 (10) 3-(-5)*3/(-15) (11) 6*(-14)-(-14)+(-13) (12) (-15)*(-13)-(-17)-(-4) (13) (-20)/13/(-7)+11 (14) 8+(-1)/7+(-4) (15) (-13)-(-9)*16*(-12) (16) (-1)+4*19+(-2) (17) (-17)*(-9)-20+(-6) (18) (-5)/12-(-16)*(-15) (19) (-3)-13*(-5)*13 (20) 5+(-7)+17-10 (21) (-10)-(-16)-13*(-16) (22) (-14)+4-19-12 (23) 5*13/14/(-10) (24) 3*1*17/(-10) (25) 6+(-12)+15-(-15) (26) 15/9/13+(-7) (27) 2/(-10)*1-(-8) (28) 11/(-19)+(-14)-5 (29) 19-16+18/(-11) (30) (-1)/19+(-5)+1 (31) (-5)+19/10*(-5) (32) 11/(-17)*(-13)*12 (33) (-8)+(-10)/8*17 (34) 7-(-12)/(-1)+(-12) (35) 12+12-19+20 (36) (-13)*(-11)*20+(-4) (37) 17/(-2)-2*(-19) (38) 1-12*(-16)+(-9) (39) 13*(-14)-15/20 (40) (-15)*(-13)-6/(-9) (41) 15*(-1)/12+7 (42) (-13)+(-16)+(-14)-(-6) (43) 14*12*(-20)*(-13) (44) 17-9-20+(-10) (45) 12/(-14)+(-14)+(-2) (46) (-15)-12/(-17)-(-3) (47) 6-3/9/(-8) (48) (-20)*(-15)*10*(-4) (49) 7/(-2)*(-3)/(-14) (50) 13/2*18*(-7) 答案: 1 243 3 -37 4 9 5 -43 6 -(20/3) 7 -(199/9) 8 54/7 9 17 10 2 11 -83 12 216 13 1021/91 14 27/7 15 -1741 16 73 17 127 18 -(2885/12) 19 842 20 5 21 214 22 -41 23 -(13/28) 24 -(51/10) 25 24 26 -(268/39) 27 39/5 28 -(372/19) 29 15/11 30 -(77/19) 31 -(29/2) 32 1716/17 33 -(117/4) 34 -17 35 25 36 2856 37 59/2 38 184 39 -(731/4) 40 587/3 41 23/4 42 -37 43 43680 44 -22 45 -(118/7) 46 -(192/17) 47 145/24 48 -12000 49 -(3/4) 50 -819 再来一些:-5+21*8/2-6-59 68/21-8-11*8+61 -2/9-7/9-56 4.6-(-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 -5+21*8/2-6-59 68/21-8-11*8+61 -2/9-7/9-56 2.4-(-3/5)+(-3.1)+4/5 (-6/13)+(-7/13)-(-2) 3/4-(-11/6)+(-7/3) 11+(-22)-3×(-11) (-0.1)?1/2×(-100) 2.4-(-3/5)+(-3.1)+4/5 (-6/13)+(-7/13)-(-2) 3/4-(-11/6)+(-7/3) 11+(-22)-3×(-11) (-0.1)?1/2×(-100) 4.6-(-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.(-8)-(-1) 45+(-30) -1.5-(-11.5) -1/4-(-1/2) 15-[1-(20-4)] -40-28-(-19)+(-24) 22.54+(-4.4)+(-12.54)+4.4 (2/3-1/2)-(1/3-5/6) [-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3) 5+21*8/2-6-59 68/21-8-11*8+61 -2/9-7/9-56 4.6-(-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 -1+2-3+4-5+6-7 -50-28+(-24)-(-22) -19.8-(-20.3)-(+20.2)-10.8 0.25- +(-1 )-(+3 ) -1-〔1-(1-0.6?3)〕×〔2-(-3)×(-4)〕 0?(-4)-42-(-8)?(-1)3 -32-(-3) 2-(-3)3+(-1)6 3×(-2)2+(-2×3)2+(-2+3)2 (-12)?4×(-6)?2 (-12)?4×(-6)×2 75?〔138?(100-54)〕 85×(95,1440?24) 80400,(4300，870?15) 240×78?(154-115) 1437×27，27×563 〔75-(12+18)〕?15 2160?〔(83-79)×18〕 280，840?24×5 325?13×(266,250) 85×(95,1440?24) 58870?(105，20×2) 1437×27，27×563 81432?(13×52，78) [37.85-(7.85+6.4)] ×30 156×[(17.7-7.2)?3] (947,599)，76×64 36×(913,276?23) -(3.4 1.25×2.4) 0.8×〔15.5-(3.21 5.79)〕 (31.8 3.2×4)?5 194,64.8?1.8×0.9 36.72?4.25×9.9 3.416?(0.016×35) 0.8×[(10,6.76)?1.2] (136+64)×(65-345?23) (6.8-6.8×0.55)?8.5 0.12× 4.8?0.12×4.8 (58+37)?(64-9×5) 812-700?(9+31×11) (3.2×1.5+2.5)?1.6 85+14×(14+208?26) 120-36×4?18+35 (284+16)×(512-8208?18) 9.72×1.6-18.305?7 4/7?[1/3×(3/5-3/10)] (4/5+1/4)?7/3+7/10 12.78,0?( 13.4，156.6 ) 37.812-700?(9+31×11) (136+64)×(65-345?23) 3.2×(1.5+2.5)?1.6 85+14×(14+208?26) ?(64-9×5) (58+37) (6.8-6.8×0.55)?8.5 (284+16)×(512-8208?18) 0.12× 4.8?0.12×4.8 (3.2×1.5+2.5)?1.6 120-36×4?18+35 10.15-10.75×0.4-5.7 5.8×(3.87-0.13) +4.2×3.74 347+45×2-4160?52 32.52-(6+9.728?3.2)×2.5 87(58+37)?(64-9×5) [(7.1-5.6)×0.9-1.15] ?2.5 (3.2×1.5+2.5)?1.6 5.4?[2.6×(3.7-2.9)+0.62] 12×6?(12-7.2)-6 3.2×6+(1.5+2.5)?1.6 (3.2×1.5+2.5)?1.6 5.8×(3.87-0.13)+4.2×3.74 33.02,(148.4,90.85)?2.5 [|-98|+76+(-87)]-23[56+(-75)-(7)]-(8+4+3) -(-89)+|-87|-23+[-75-(7)+76]-(10+39-24) |-9.8|+(-4.6)-[8.7-(-1.3)]+(-5.4)-(-0.2) [-(-84)+46]-|-9.1|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×(-1 )2?(1 )2; (2)-14-(2-0.5)× ×[( )2-( )3]; (3)-1 ×[1-3×(- )2]-( )2×(-2)3?(- )3 (4)(0.12+0.32) ? [-22+(-3)2-3 × ]; (5)-6.24×32+31.2×(-2)3+(-0.51) ×624. [-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3) 5+21*8/2-6-59 68/21-8-11*8+61 -2/9-7/9-56 4.6-(-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 75?〔138?(100-54)〕 85×(95,1440?24) 80400,(4300，870?15) 240×78?(154-115) 1437×27，27×563 〔75-(12+18)〕?15 2160?〔(83-79)×18〕 280，840?24×5 325?13×(266,250) 85×(95,1440?24) 58870?(105，20×2) 1437×27，27×563 81432?(13×52，78) [37.85-(7.85+6.4)] ×30 156×[(17.7-7.2)?3] (947,599)，76×64 36×(913,276?23) [192,(54，38)]×67 [(7.1-5.6)×0.9-1.15]?2.5 81432?(13×52，78) 5.4?[2.6×(3.7-2.9)+0.62] (947,599)，76×64 60,(9.5，28.9)]?0.18 2.881?0.43,0.24×3.5 20×[(2.44,1.8)?0.4，0.15] 28-(3.4 1.25×2.4) 0.8× 〔15.5-(3.21 5.79)〕 (31.8 3.2×4)?5 194,64.8?1.8×0.9 36.72?4.25×9.9 3.416?(0.016×35) 0.8×[(10,6.76)?1.2] (136+64)×(65-345?23) (6.8-6.8×0.55)?8.5 0.12× 4.8?0.12×4.8 (58+37)?(64-9×5) 812-700?(9+31×11) (3.2×1.5+2.5)?1.6 85+14×(14+208?26) 120-36×4?18+35 (284+16)×(512-8208?18) 9.72×1.6-18.305?7 4/7?[1/3×(3/5-3/10)] (4/5+1/4)?7/3+7/10 12.78,0?( 13.4，156.6 ) 37.812-700?(9+31×11) (136+64)×(65-345?23) 3.2×(1.5+2.5)?1.6 85+14×(14+208?26) (58+37)?(64-9×5) (6.8-6.8×0.55)?8.5 (284+16)×(512-8208?18) 0.12× 4.8?0.12×4.8 (3.2×1.5+2.5)?1.6 120-36×4?18+35 10.15-10.75×0.4-5.7 5.8×(3.87-0.13)+4.2×3.74 347+45×2-4160?52 32.52-(6+9.728?3.2)×2.5 87(58+37)?(64-9×5) [(7.1-5.6)×0.9-1.15] ?2.5 (3.2×1.5+2.5)?1.6 5.4?[2.6×(3.7-2.9)+0.62] 12×6?(12-7.2)-6 3.2×6+(1.5+2.5)?1.6 (3.2×1.5+2.5)?1.6 5.8×(3.87-0.13)+4.2×3.74 33.02,(148.4,90.85)?2.5 (一)计算题: (1)23+(-73) (2)(-84)+(-49) (3)7+(-2.04) (4)4.23+(-7.57) (5)(-7/3)+(-7/6) (6)9/4+(-3/2) (7)3.75+(2.25)+5/4 (8)-3.75+(+5/4)+(-1.5) (9)(-17/4)+(-10/3)+(+13/3)+(11/3) (10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4) (11)(+1.3)-(+17/7) (12)(-2)-(+2/3) (13)|(-7.2)-(-6.3)+(1.1)| (14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|) (15)(-2/199)*(-7/6-3/2+8/3) (16)4a)*(-3b)*(5c)*1/6 1. 3/7 × 49/9 - 4/3 2. 8/9 × 15/36 + 1/27 3. 12× 5/6 – 2/9 ×3 4. 8× 5/4 + 1/4 5. 6? 3/8 – 3/8 ?6 6. 4/7 × 5/9 + 3/7 × 5/9 7. 5/2 -( 3/2 + 4/5 ) 8. 7/8 + ( 1/8 + 1/9 ) 9. 9 × 5/6 + 5/6 10. 3/4 × 8/9 - 1/3 0.12χ，1.8×0.9=7.2 (9,5χ)×0.3=1.02 6.4χ-χ=28+4.4 11. 7 × 5/49 + 3/14 12. 6 ×( 1/2 + 2/3 ) 13. 8 × 4/5 + 8 × 11/5 14. 31 × 5/6 – 5/6 15. 9/7 - ( 2/7 – 10/21 ) 16. 5/9 × 18 – 14 × 2/7 17. 4/5 × 25/16 + 2/3 × 3/4 18. 14 × 8/7 – 5/6 × 12/15 19. 17/32 – 3/4 × 9/24 20. 3 × 2/9 + 1/3 21. 5/7 × 3/25 + 3/7 22. 3/14 ×× 2/3 + 1/6 23. 1/5 × 2/3 + 5/6 24. 9/22 + 1/11 ? 1/2 25. 5/3 × 11/5 + 4/3 26. 45 × 2/3 + 1/3 × 15 27. 7/19 + 12/19 × 5/6 28. 1/4 + 3/4 ? 2/3 29. 8/7 × 21/16 + 1/2 30. 101 × 1/5 – 1/5 × 21 31.50，160?40 (58+370)?(64-45) 32.120-144?18+35 33.347+45×2-4160?52 58+37)?(64-9×5) 34( 35.95?(64-45) 36.178-145?5×6+42 420+580-64×21?28 37.812-700?(9+31×11) (136+64)×(65-345?23) 38.85+14×(14+208?26) 39.(284+16)×(512-8208?18) 40.120-36×4?18+35 41.(58+37)?(64-9×5) 42.(6.8-6.8×0.55)?8.5 43.0.12× 4.8?0.12×4.8 44.(3.2×1.5+2.5)?1.6 (2)3.2×(1.5+2.5)?1.6 45.6-1.6?4= 5.38+7.85-5.37= 46.7.2?0.8-1.2×5= 6-1.19×3-0.43= 47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9 48.10.15-10.75×0.4-5.7 49.5.8×(3.87-0.13)+4.2×3.74 50.32.52-(6+9.728?3.2)×2.5 51.-5+58+13+90+78-(-56)+50 52.-7*2-57/(3 53.(-7)*2/(1/3)+79/(3+6/4) 54.123+456+789+98/(-4) 55.369/33-(-54-31/15.5) 56.39+{3x[42/2x(3x8)]} 57.9x8x7/5x(4+6) 58.11x22/(4+12/2) 59.94+(-60)/10