初一数学应用题公式(初一数学应用题及答案)
来源:互联网    时间:2023-07-28 19:59:06


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1、我这里有很多,你自己去摘抄一些把。

2、×(8+10) =×8+×10=10+= 9123-(123+) === ×+× =×(+)=×3= 9999×1001 =9999×(1000+1)=9999×1000+9999×1 =10008999 ××+× =()×+×=×+× ×(+) =×10 =83 ++ =(+)+ =10+ = 933-157-43 =933-(157+43)=933-200=733 4821-998 =4821-1000+2=3823 I32×125×25 =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+1591)÷ 434=1290÷43+1591÷43=30+××××16=××××=×(××)=×(4×××4×)=×(4××2××4×)=×()=×[4××()]=×[4××] =×(4×)=4237 +18÷× =+==×8+×8-47 =52+28-47=80-47()×5分之 =/==×7分之4÷[1÷()]=8×4/7÷[1÷]=8×4/7÷4=8/72700×(506-499)÷900 =2700×7÷900 =18900÷900 =21 -(-)÷=-÷=- =10(1÷1-1)÷ =(1-1)÷ =0÷ =+(3-÷)×1=+×1 =+ =[-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+[-]+4/5+19/6= [-]+[-]++= -8 +[-17/5]+[-1/8]+[-]= -3 [-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 (-3/4+/4) 1/2+3+5/6-7/12 [2/3-4-1/4*(-)]/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-7y1437×27+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) [(+)] ×30 156×[()÷3] (947-599)+76×64 36×(913-276÷23) [192-(54+38)]×67 [()×]÷ 81432÷(13×52+78) ÷[×()+] (947-599)+76×64 60-(+)]÷ ÷-× 20×[(-)÷+] 28-( ×) ×〔( )〕 ( ×4)÷5 194-÷× ÷× ÷(×35) ×[(10-)÷] (136+64)×(65-345÷23) (×)÷ × ÷× (58+37)÷(64-9×5) 812-700÷(9+31×11) (×+)÷ 85+14×(14+208÷26) 120-36×4÷18+35 (284+16)×(512-8208÷18) ×÷7 4/7÷[1/3×(3/5-3/10)] (4/5+1/4)÷7/3+7/10 -0÷( + ) ÷(9+31×11) (136+64)×(65-345÷23) ×(+)÷ 85+14×(14+208÷26) (58+37)÷(64-9×5) (×)÷ (284+16)×(512-8208÷18) × ÷× (×+)÷ 120-36×4÷18+35 × ×()+× 347+45×2-4160÷52 (6+÷)× 87(58+37)÷(64-9×5) [()×] ÷ (×+)÷ ÷[×()+] 12×6÷()-6 ×6+(+)÷ (×+)÷ ×()+× -(-)÷)23+(-73) (2)(-84)+(-49) (3)7+(-) (4)+(-) (5)(-7/3)+(-7/6) (6)9/4+(-3/2) (7)+()+5/4 (8)-+(+5/4)+(-) (9)(-17/4)+(-10/3)+(+13/3)+(11/3) (10)(-)+(+)+(-)+()+(+)+(+) (11)(+)-(+17/7) (12)(-2)-(+2/3) (13)|(-)-(-)+()| (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 χ+×= (9-5χ)×= χ-χ=28+ 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 +160÷40 (58+370)÷(64-45) ÷18+35 +45×2-4160÷52 34(58+37)÷(64-9×5) ÷(64-45) ÷5×6+42 420+580-64×21÷28 ÷(9+31×11) (136+64)×(65-345÷23) +14×(14+208÷26) 39.(284+16)×(512-8208÷18) ×4÷18+35 41.(58+37)÷(64-9×5) 42.(×)÷ × ÷× 44.(×+)÷ (2)×(+)÷ ÷4= += ÷×5= ×= ×(×4)= ×+× × ×()+× (6+÷)× 51.-5+58+13+90+78-(-56)+50 52.-7*2-57/(3 53.(-7)*2/(1/3)+79/(3+6/4) +456+789+98/(-4) /33-(-54-31/) +{3x[42/2x(3x8)]} /5x(4+6) /(4+12/2) +(-60)/10 1. a^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)^2 3. (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)^2 4. (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)^2 6. 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) 8. 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 - 4/3 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 χ+×= (9-5χ)×= χ-χ=28+ 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 +160÷40 (58+370)÷(64-45) ÷18+35 +45×2-4160÷52 34(58+37)÷(64-9×5) ÷(64-45) ÷5×6+42 420+580-64×21÷28 ÷(9+31×11) (136+64)×(65-345÷23) +14×(14+208÷26) 39.(284+16)×(512-8208÷18) ×4÷18+35 41.(58+37)÷(64-9×5) 42.(×)÷ × ÷× 44.(×+)÷ (2)×(+)÷ ÷4= += ÷×5= ×= ×(×4)= ×+× × ×()+× (6+÷)× 51.-5+58+13+90+78-(-56)+50 52.-7*2-57/(3 53.(-7)*2/(1/3)+79/(3+6/4) +456+789+98/(-4) /33-(-54-31/) +{3x[42/2x(3x8)]} /5x(4+6) /(4+12/2) +(-60)/10 1. a^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)^2 3. (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)^2 4. (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)^2 6. 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) 8. 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)。

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