7年级数学题 7年级数学题上册计算
关于7年级数学题,7年级数学题上册计算这个很多人还不知道,今天小蚪来为大家解答以上的问题,现在让我们一起来看看吧!
1、3.416÷(0.016×35)1.25×(8+10)=1.25×8+1.25×10=10+12.5=22.523-(123+8.8)=23-123-8.8=9000-8.8=89.21.24×8.3+8.3×1.76=8.3×(1.24+1.76)=8.3×3=24.99999×1001=9999×(1000+1)=9999×1000+9999×1=10008994.8×6.3-6.3×6.5+8.3×3.7=(14.8-6.5)×6.3+8.3×3.7=8.3×6.3+8.3×3.78.3×(6.3+3.7)=8.3×10=831.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78933-157-43=933-(157+43)=933-200=7334821-998=4821-1000+2=3823I32×125×25=4×8×125×25=(4×25)×(8×125)=100×1000=1000009048÷268=(2600+2600+2600+1248)÷26=2600÷26+2600÷26+2600÷26+1248÷269=100+100+100+48=3482881÷ 43=(1290+15)÷ 434=30+373.2×42.3×3.75-12.5×0.423×16=3.2×42.3×3.75-1.25×42.3×1.6=42.3×(3.2×3.75-1.25×1.6)=42.3×(4×0.8×3.75-1.25×4×0.4)=42.3×(4×0.4×2×3.75-1.25×4×0.4)=42.3×(4x0.4x7.5-1.25x4x0.4)=42.3×[4×0.4×(7.5-1.25)]=42.3×[4×0.4×6.25]=42.3×(4×2.5)=42371.8+18÷1.5-0.5×0.3=1.8+12-0.15=13.8-0.15=13.656.5×8+3.5×8-47=52+28-47=80-47(80-9.8)×5分之2-1.32=70.2X2/5-1.32=28.08-1.32=26.768×7分之4÷[1÷(3.2-2.95)]=8×4/7÷[1÷0.25]=8×4/7÷4=8/72700×(506-499)÷900=2700×7÷900=18900÷900=2133.02-(148.4-90.85)÷2.5=33.02-57.55÷2.5=33.02-23.02=10(1÷1-1)÷5.1=(1-1)÷5.1=0÷5.1=018.1+(3-0.299÷0.23)×1=18.1+1.7×1=18.1+1.7=19.8[-18]+29+[-52]+60= 19[-3]+[-2]+[-1]+0+1+2= -3[-301]+125+301+[-75]= 50[-1]+[-1/2]+3/4+[-1/4]= -1[-7/2]+5/6+[-0.5]+4/5+19/6= 1.25[-26.54]+[-6.14]+18.54+6.14= -81.125+[-17/5]+[-1/8]+[-0.6]= -3[-98+76+(-87)]23[56+(-75)-(7)]-(8+4+3)5+218/2-6-59-2/9-7/9-564.6-(-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)+43-28-81/2+8/1/8(-28)/(-6+4)+(-1)2/(-2)+0/7-(-8)(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)(-2)(5+3/88/30/(-2)-3(-84)/2(-3)/(-6)1/2(-4/15)/2/3-3x+2y-5x-7y1437×27+27×563 〔75-(12+18)〕÷152160÷〔(83-79)×18〕 280+840÷24×5325÷13×(266-) 85×(95-1440÷24)58870÷(105+20×2) 1437×27+27×56381432÷(13×52+78) [37.85-(7.85+6.4)] ×30156×[(17.7-7.2)÷3] (947-599)+76×6436×(3-276÷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)÷8.50.12× 4.8÷0.12×4.8 (58+37)÷(64-9×5)812-700÷(9+31×11) (3.2×1.5+2.5)÷1.685+14×(14+208÷26) 120-36×4÷18+35(284+16)×(512-8208÷18) 9.72×1.6-18.305÷74/7÷[1/3×(3/5-3/10)] (4/5+1/4)÷7/3+7/1012.78-0÷( 13.4+156.6 ) 37.812-700÷(9+31×11) (136+64)×(65-345÷23) 3.2×(1.5+2.5)÷1.685+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)÷1.6120-36×4÷18+35 10.15-10.75×0.4-5.75.8×(3.87-0.13)+4.2×3.74 347+45×2-4160÷5232.52-(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)÷1.65.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-63.2×6+(1.5+2.5)÷1.6 (3.2×1.5+2.5)÷1.65.8×(3.87-0.13)+4.2×3.7433.02-(148.4-90.85)÷2.51)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有且两次迈3步;15种;/4)-(-3/4)|-|1-5/4-|-3/4|)(15)(-2/199)(-7/6-3/2+8/3)1. 3/7 × 49/9 - 4/32. 8/9 × 15/36 + 1/273. 12× 5/6 – 2/9 ×34. 8× 5/4 + 1/45. 6÷ 3/8 – 3/8 ÷66. 4/7 × 5/9 + 3/7 × 5/97. 5/2 -( 3/2 + 4/5 )8. 7/8 + ( 1/8 + 1/9 )9. 9 × 5/6 + 5/610. 3/4 × 8/9 - 1/30.12χ+1.8×0.9=7.2 (9-5χ)×0.3=1.02 6.4χ-χ=28+4.411. 7 × 5/49 + 3/1412. 6 ×( 1/2 + 2/3 )14. 31 × 5/6 – 5/615. 9/7 - ( 2/7 – 10/21 )16. 5/9 × 18 – 14 × 2/717. 4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1520. 3 × 2/9 + 1/321. 5/7 × 3/25 + 3/722. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/624. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/326. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/329. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.50+160÷40 (58+370)÷(64-45)32.120-144÷18+3533.347+45×2-4160÷5235.95÷(64-45)36.178-145÷5×6+42 420+580-64×21÷2837.812-700÷(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+3541.(58+37)÷(64-9×5)42.(6.8-6.8×0.55)÷8.543.0.12× 4.8÷0.12×4.844.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.645.6-1.6÷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+0.32×1.948.10.15-10.75×0.4-5.749.5.8×(3.87-0.13)+4.2×3.7450.32.52-(6+9.728÷3.2)×2.551.-5+58+13+90+78-(-56)+5052.-72-57/(353.(-7)2/(1/3)+79/(3+6/4)54.123+456+789+98/(-4)56.39+{3x[42/2x(3x8)]}58.11x22/(4+12/2)59.94+(-60)/10a^3-2b^3+ab(2a-b)=a^3+2a^2b-2b^3-ab^2=a^2(a+2b)-b^2(2b+a)=(a+2b)(a^2-b^2)=(a+2b)(a+b)(a-b)2.(x^2+y^2)^2-4y(x^2+y^2)+4y^2=(x^2+y^2-2y)^23.(x^2+2x)^2+3(x^2+2x)+x^2+2x+3=(x^2+2x)^2+4(x^2+2x)+3=(x^2+2x+3)(x^2+2x+1)=(x^2+2x+3)(x+1)^24.(a+1)(a+2)+(2a+1)(a-2)-12=a^2+3a+2+2a^2-3a-2-12=3a^2-12=3(a+2)(a-2)5.x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2=[x(y+z)-y(x-z)]^2=(xz+yz)^2=z^2(x+y)^26.3(a+2)^2+28(a+2)-20=[3(a+2)-2][(a+2)+10]=(3a+4)(a+12)7.(a+b)^2-(b-c)^2+a^2-c^2=(a+b)^2-c^2+a^2-(b-c)^2=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)=(a+b-c)(a+b+c+a-b+c)=2(a+b-c)(a+c)x(x+1)(x^2+x-1)-2=(x^2+x)(x^2+x-1)-2=(x^2+x)^2-(x^2+x)-2=(x^2+x-2)(x^2+x+1)=(x+2)(x-1)(x^2+x+1)1. 3/7 × 49/9 - 4/32. 8/9 × 15/36 + 1/273. 12× 5/6 – 2/9 ×34. 8× 5/4 + 1/45. 6÷ 3/8 – 3/8 ÷66. 4/7 × 5/9 + 3/7 × 5/97. 5/2 -( 3/2 + 4/5 )8. 7/8 + ( 1/8 + 1/9 )9. 9 × 5/6 + 5/610. 3/4 × 8/9 - 1/30.12χ+1.8×0.9=7.2 (9-5χ)×0.3=1.02 6.4χ-χ=28+4.411. 7 × 5/49 + 3/1412. 6 ×( 1/2 + 2/3 )14. 31 × 5/6 – 5/615. 9/7 - ( 2/7 – 10/21 )16. 5/9 × 18 – 14 × 2/717. 4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1520. 3 × 2/9 + 1/321. 5/7 × 3/25 + 3/722. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/624. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/326. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/329. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.50+160÷40 (58+370)÷(64-45)32.120-144÷18+3533.347+45×2-4160÷5235.95÷(64-45)36.178-145÷5×6+42 420+580-64×21÷2837.812-700÷(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+3541.(58+37)÷(64-9×5)42.(6.8-6.8×0.55)÷8.543.0.12× 4.8÷0.12×4.844.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.645.6-1.6÷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+0.32×1.948.10.15-10.75×0.4-5.749.5.8×(3.87-0.13)+4.2×3.7450.32.52-(6+9.728÷3.2)×2.551.-5+58+13+90+78-(-56)+5052.-72-57/(353.(-7)2/(1/3)+79/(3+6/4)54.123+456+789+98/(-4)56.39+{3x[42/2x(3x8)]}58.11x22/(4+12/2)59.94+(-60)/10a^3-2b^3+ab(2a-b)=a^3+2a^2b-2b^3-ab^2=a^2(a+2b)-b^2(2b+a)=(a+2b)(a^2-b^2)=(a+2b)(a+b)(a-b)2.(x^2+y^2)^2-4y(x^2+y^2)+4y^2=(x^2+y^2-2y)^23.(x^2+2x)^2+3(x^2+2x)+x^2+2x+3=(x^2+2x)^2+4(x^2+2x)+3=(x^2+2x+3)(x^2+2x+1)=(x^2+2x+3)(x+1)^24.(a+1)(a+2)+(2a+1)(a-2)-12=a^2+3a+2+2a^2-3a-2-12=3a^2-12=3(a+2)(a-2)5.x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2=[x(y+z)-y(x-z)]^2=(xz+yz)^2=z^2(x+y)^26.3(a+2)^2+28(a+2)-20=[3(a+2)-2][(a+2)+10]=(3a+4)(a+12)7.(a+b)^2-(b-c)^2+a^2-c^2=(a+b)^2-c^2+a^2-(b-c)^2=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)=(a+b-c)(a+b+c+a-b+c)=2(a+b-c)(a+c)x(x+1)(x^2+x-1)-2=(x^2+x)(x^2+x-1)-2=(x^2+x)^2-(x^2+x)-2=(x^2+x-2)(x^2+x+1)=(x+2)(x-1)(x^2+x+1)2x+17=35 3x-64=11 12+8x=52 0.8x-4.2=2.2 2x+5=10 3x-15=75 4x+4o=320 3x+77=122 5x-1.6=0.6 6x-4=20 10x-0.6=2.4 500-12x=140 1) 66x+17y=3967 25x+y=1200 :x=48 y=47 (2) 18x+23y=2303 74x-y=1998 :x=27 y=79 (3) 44x+90y=7796 44x+y=3476 :x=79 y=48 (4) 76x-66y=4082 30x-y=2940 :x=98 y=51 (5) 67x+54y=8546 71x-y=5680 :x=80 y=59 (6) 42x-95y=-1410 21x-y=1575 :x=75 y=48 (7) 47x-40y=853 34x-y=2006 :x=59 y=48 (8) 19x-32y=-1786 75x+y=4950 :x=66 y=95 (9) 97x+24y=7202 58x-y=2900 :x=50 y=98 (10) 42x+85y=6362 63x-y=1638 :x=26 y=62 (11) 85x-92y=-2518 27x-y=486 :x=18 y=44 (12) 79x+40y=2419 56x-y=1176 :x=21 y=19 (13) 80x-87y=2156 22x-y=880 :x=40 y=12 (14) 32x+62y=5134 57x+y=2850 :x=50 y=57 (15) 83x-49y=82 59x+y=2183 :x=37 y=61 (16) x+70y=5845 95x-y=4275 :x=45 y=25 (17) 29x+44y=5281 88x-y=3608 :x=41 y=93 (18) 25x-95y=-4355 40x-y=2000 :x=50 y=59 (19) 54x+68y=3284 78x+y=1404 :x=18 y=34 (20) 70x+13y=3520 52x+y=2132 :x=41 y=50 (21) 48x-54y=-3186 24x+y=1080 :x=45 y=99 (22) 36x+77y=7619 47x-y=799 :x=17 y= (23) 13x-42y=-2717 31x-y=1333 :x=43 y=78 (24) 28x+28y=3332 52x-y=4628 :x=89 y=30 (25) 62x-98y=-2564 46x-y=2024 :x=44 y=54 (26) 79x-76y=-4388 26x-y=832 :x=32 y= (27) 63x-40y=-821 42x-y=546 :x=13 y=41 (28) 69x-96y=-1209 42x+y=3822 :x= y=78 (29) 85x+67y=7338 11x+y=308 :x=28 y=74 (30) 78x+74y=12928 14x+y=1218 :x=87 y=83 (31) 39x+42y=5331 59x-y=5841 :x=99 y=35 (32) 29x+18y=16 58x+y=2320 :x=40 y=42 (33) 40x+31y=6043 45x-y=3555 :x=79 y=93 (34) 47x+50y=8598 45x+y=3780 :x=84 y=93 (35) 45x-30y=-1455 29x-y=725 :x=25 y=86 (36) 11x-43y=-1361 47x+y=799 :x=17 y=36 (37) 33x+59y=3254 94x+y=1034 :x=11 y=49 (38) 89x-74y=-2735 68x+y=1020 :x=15 y=55 (39) 94x+71y=7517 78x+y=3822 :x=49 y=41 (40) 28x-62y=-4934 46x+y=552 :x=12 y=85 (41) 75x+43y=8472 17x-y=1394 :x=82 y=54 (42) 41x-38y=-1180 29x+y=1450 :x=50 y=85 (43) 22x-59y=824 63x+y=4725 :x=75 y=14 (44) 95x-56y=-401 90x+y=1530 :x=17 y=36 (45) 93x-52y=-852 29x+y=464 :x=16 y=45 (46) 93x+12y=8823 54x+y=44 :x= y=30 (47) 21x-63y=84 20x+y=1880 :x=94 y=30 (48) 48x+93y=9756 38x-y=950 :x=25 y=92 (49) 99x-67y=4011 75x-y=5475 :x=73 y=48 (50) 83x+64y=92 90x-y=3690 :x=41 y=92 3X+18=52 x=34/3 4Y+11=22 y=11/4 3X9=5 x=5/27 8Z/6=48 z=36 3X+7=59 x=52/3 4Y-69=81 y=75/4 8X6=5 x=5/48 7Z/9=4 y=63/7 15X+8-5X=54 x=4.6 5Y5=27 y=27/40 8x+2=10 x=1 x8=88 x=11 y-90=1 y= 2x-98=2 x=50 6x6=12 x=1/3 5-6=5x x=-1/5 6x=42 x=7 55-y=33 y=22 113x=60 x=20/11 8-y=2 y=-6 1.x+2=3 2.x+32=33 3.x+6=18 4.4+x=47 5.19-x=8 6.98-x=13 7.66-x=10 8.5x=10 9.3x=27 10.7x=7 11.8x=8 12.9x=9 13.10x=100 14.66x=660 15.7x=49 16.2x=4 17.3x=9 18.4x=16 19.5x=25 20.6x=36 21.8x=64 22.9x=81 23.10x=100 24.11x=121 25.12x=144 26.13x=169 27.14x=196 28.15x=225 29.16x=256 30.17x=289 31.18x=324 32.19x=361 33.20x=400 31.21x=441 32.22x=484 33.111x=12321 34.1111x=1234321 35.11111x=123454321 36.111111x=12345654321 37.46/x=23 38.64/x=8 39.99/x=11 40.1235467564x=0 41.2x+1= -2+x 42.4x-3(20-x)=3 43..-2(x-1)=4 44.3X+189=521 45.4Y+119=22 5 46.3X+77=59 47.4Y-6985=81 48.X=0.1 49.5X=55.5 50.Y=50-85。
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