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  • 求四年級(jí)數(shù)學(xué)豎式題1000道,很急!

    求四年級(jí)數(shù)學(xué)豎式題1000道,很急!
    數(shù)學(xué)人氣:750 ℃時(shí)間:2020-04-14 01:08:26
    優(yōu)質(zhì)解答
    1)3.28-4.76+1 - ;
    (2)2.75-2 -3 +1 ;
    (3)42÷(-1 )-1 ÷(-0.125);
    (4)(-48) ÷82-(-25) ÷(-6)2;
    (5)- +( )×(-2.4).
    2.計(jì)算題:(10′×5=50′)
    (1)-23÷1 ×(-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)計(jì)算題:
    (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
    34(58+37)÷(64-9×5)
    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
    1.125*3+125*5+25*3+25
    2.9999*3+101*11*(101-92)
    3.(23/4-3/4)*(3*6+2)
    4. 3/7 × 49/9 - 4/3
    5. 8/9 × 15/36 + 1/27
    6. 12× 5/6 – 2/9 ×3
    7. 8× 5/4 + 1/4
    8. 6÷ 3/8 – 3/8 ÷6
    9. 4/7 × 5/9 + 3/7 × 5/9
    10. 5/2 -( 3/2 + 4/5 )
    11. 7/8 + ( 1/8 + 1/9 )
    12. 9 × 5/6 + 5/6
    13. 3/4 × 8/9 - 1/3
    14. 7 × 5/49 + 3/14
    15. 6 ×( 1/2 + 2/3 )
    16. 8 × 4/5 + 8 × 11/5
    17. 31 × 5/6 – 5/6
    18. 9/7 - ( 2/7 – 10/21 )
    19. 5/9 × 18 – 14 × 2/7
    20. 4/5 × 25/16 + 2/3 × 3/4
    21. 14 × 8/7 – 5/6 × 12/15
    22. 17/32 – 3/4 × 9/24
    23. 3 × 2/9 + 1/3
    24. 5/7 × 3/25 + 3/7
    25. 3/14 ×× 2/3 + 1/6
    26. 1/5 × 2/3 + 5/6
    27. 9/22 + 1/11 ÷ 1/2
    28. 5/3 × 11/5 + 4/3
    29. 45 × 2/3 + 1/3 × 15
    30. 7/19 + 12/19 × 5/6
    31. 1/4 + 3/4 ÷ 2/3
    32. 8/7 × 21/16 + 1/2
    33. 101 × 1/5 – 1/5 × 21
    34.50+160÷40
    35.120-144÷18+35
    36.347+45×2-4160÷52
    37(58+37)÷(64-9×5)
    38.95÷(64-45)
    39.178-145÷5×6+42
    40.812-700÷(9+31×11)
    41.85+14×(14+208÷26)
    43.120-36×4÷18+35
    44.(58+37)÷(64-9×5)
    45.(6.8-6.8×0.55)÷8.5
    46.0.12× 4.8÷0.12×4.8
    47.(3.2×1.5+2.5)÷1.6
    48.6-1.6÷4= 5.38+7.85-5.37=
    49.7.2÷0.8-1.2×5= 6-1.19×3-0.43=
    50.6.5×(4.8-1.2×4)=
    51.5.8×(3.87-0.13)+4.2×3.74
    52.32.52-(6+9.728÷3.2)×2.5
    53.[(7.1-5.6)×0.9-1.15] ÷2.5
    54.5.4÷[2.6×(3.7-2.9)+0.62]
    55.12×6÷(12-7.2)-6
    56.12×6÷7.2-6
    57.0.68×1.9+0.32×1.9
    58.58+370)÷(64-45)
    59.420+580-64×21÷28
    60.136+6×(65-345÷23)
    15-10.75×0.4-5.7
    62.18.1+(3-0.299÷0.23)×1
    63.(6.8-6.8×0.55)÷8.5
    64.0.12× 4.8÷0.12×4.8
    65.(3.2×1.5+2.5)÷1.6
    66.3.2×6+(1.5+2.5)÷1.6
    67.0.68×1.9+0.32×1.9
    68.10.15-10.75×0.4-5.7
    69.5.8×(3.87-0.13)+4.2×3.74
    70.32.52-(6+9.728÷3.2)×2.5
    71.[(7.1-5.6)×0.9-1.15] ÷2.5
    72.5.4÷[2.6×(3.7-2.9)+0.62]
    73.12×6÷(12-7.2)-6
    74.12×6÷7.2-6
    75.33.02-(148.4-90.85)÷2.5
    1) 76.(25%-695%-12%)*36
    77./4*3/5+3/4*2/5
    78.1-1/4+8/9/7/9
    79.+1/6/3/24+2/21
    80./15*3/5
    81.3/4/9/10-1/6
    82./3+1/2)/5/6-1/3]/1/7
    83./5+3/5/2+3/4
    84.(2-2/3/1/2)]*2/5
    85.+5268.32-2569
    86.3+456-52*8
    87.5%+6325
    88./2+1/3+1/4
    2) 89+456-78
    3) 5%+. 3/7 × 49/9 - 4/3
    4) 9 × 15/36 + 1/27
    5) 2× 5/6 – 2/9 ×3
    6) 3× 5/4 + 1/4
    7) 94÷ 3/8 – 3/8 ÷6
    8) 95/7 × 5/9 + 3/7 × 5/9
    9) 6/2 -( 3/2 + 4/5 )
    10) 8 + ( 1/8 + 1/9 )
    11) 8 × 5/6 + 5/6
    12) 1/4 × 8/9 - 1/3
    13) 10 × 5/49 + 3/14
    14) 1.5 ×( 1/2 + 2/3 )
    15) 2/9 × 4/5 + 8 × 11/5
    16) 3.1 × 5/6 – 5/6
    17) 4/7 - ( 2/7 – 10/21 )
    18) 19 × 18 – 14 × 2/7
    19) 5 × 25/16 + 2/3 × 3/4
    20) 4 × 8/7 – 5/6 × 12/15
    21) 7/32 – 3/4 × 9/24
    22) 1、 2/3÷1/2-1/4×2/5
    2、 2-6/13÷9/26-2/3
    3、 2/9+1/2÷4/5+3/8
    4、 10÷5/9+1/6×4
    5、 1/2×2/5+9/10÷9/20
    6、 5/9×3/10+2/7÷2/5
    7、 1/2+1/4×4/5-1/8
    8、 3/4×5/7×4/3-1/2
    9、 23-8/9×1/27÷1/27
    10、 8×5/6+2/5÷4
    11、 1/2+3/4×5/12×4/5
    12、 8/9×3/4-3/8÷3/4
    13、 5/8÷5/4+3/23÷9/11
    23) 1.2×2.5+0.8×2.5
    24) 8.9×1.25-0.9×1.25
    25) 12.5×7.4×0.8
    26) 9.9×6.4-(2.5+0.24)(27) 6.5×9.5+6.5×0.5
    0.35×1.6+0.35×3.4
    0.25×8.6×4
    6.72-3.28-1.72
    0.45+6.37+4.55
    5.4+6.9×3-(25-2.5)2×41846-620-380
    4.8×46+4.8×54
    0.8+0.8×2.5
    1.25×3.6×8×2.5-12.5×2.4
    28×12.5-12.5×20
    23.65-(3.07+3.65)
    (4+0.4×0.25)8×7×1.25
    1.65×99+1.65
    27.85-(7.85+3.4)
    48×1.25+50×1.25×0.2×8
    7.8×9.9+0.78
    (1010+309+4+681+6)×12
    3×9146×782×6×854
    5.15×7/8+6.1-0.60625
    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
    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
    34(58+37)÷(64-9×5)
    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.[(7.1-5.6)×0.9-1.15] ÷2.5
    52.5.4÷[2.6×(3.7-2.9)+0.62]
    53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6
    102×4.5
    7.8×6.9+2.2×6.9
    5.6×0.25
    8×(20-1.25)
    1)127+352+73+44 (2)89+276+135+33
    (1)25+71+75+29 +88 (2)243+89+111+57
    9405-2940÷28×21
    920-1680÷40÷7
    690+47×52-398
    148+3328÷64-75
    360×24÷32+730
    2100-94+48×54
    51+(2304-2042)×23
    4215+(4361-716)÷81
    (247+18)×27÷25
    36-720÷(360÷18)
    1080÷(63-54)×80
    (528+912)×5-6178
    8528÷41×38-904
    264+318-8280÷69
    (174+209)×26- 9000
    814-(278+322)÷15
    1406+735×9÷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)
    1.18.1+(3-0.299÷0.23)×1
    2.(6.8-6.8×0.55)÷8.5
    3.0.12× 4.8÷0.12×4.8
    4.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6
    5.6-1.6÷4= 5.38+7.85-5.37=
    6.7.2÷0.8-1.2×5= 6-1.19×3-0.43=
    7.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9
    8.10.15-10.75×0.4-5.7
    9.5.8×(3.87-0.13)+4.2×3.74
    10.32.52-(6+9.728÷3.2)×2.5
    11.[(7.1-5.6)×0.9-1.15] ÷2.5
    12.5.4÷[2.6×(3.7-2.9)+0.62]
    13.12×6÷(12-7.2)-6
    14.12×6÷7.2-6
    15.33.02-(148.4-90.85)÷2.5
    184+98 695+202 864-199 738-301
    380+476+120 (569+468)+(432+131)
    256-147-53 373-129+29 189-(89+74) 456-(256-36)
    28×4×25 125×32×25 9×72×125
    720÷16÷5 630÷42
    102×35 98×42
    26×39+61×26 356×9-56×9
    99×55+55 78×101-78
    52×76+47×76+76 134×56-134+45×134
    (乘法分配律的運(yùn)用)
    48×52×2-4×48
    25×23×(40+4)
    999×999+1999
    (乘法分配律的綜合運(yùn)用)
    158+262+138 375+219+381+225 5001-247-1021-232
    (181+2564)+2719 378+44+114+242+222 276+228+353+219
    (375+1034)+(966+125) (2130+783+270)+1017 99+999+9999+99999
    7755-(2187+755) 2214+638+286 3065-738-1065 899+344
    2357-183-317-357 2365-1086-214 497-299 2370+1995
    3999+498 1883-398 12×25 75×24
    138×25×4 (13×125)×(3×8) (12+24+80)×50 704×25
    25×32×125 32×(25+125) 88×125 102×76 58×98
    178×101-178 84×36+64×84 75×99+2×75 83×102-83×2
    98×199 123×18-123×3+85×123 50×(34×4)×3 25×(24+16)
    178×99+178 79×42+79+79×57 7300÷25÷4 8100÷4÷75
    16800÷120 30100÷2100 32000÷400 49700÷700
    1248÷24 3150÷15 4800÷25 21500÷125
    158+262+138
    375+219+381+225
    5001-247-1021-232
    (181+2564)+2719
    378+44+114+242+222
    276+228+353+219
    (375+1034)+(966+125)
    (2130+783+270)+1017
    99+999+9999+99999
    7755-(2187+755)
    2214+638+286
    3065-738-1065
    899+344
    2357-183-317-357
    2365-1086-214
    497-299
    2370+1995
    3999+498
    1883-398
    12×25
    75×24
    138×25×4
    (13×125)×(3×8)
    (12+24+80)×50
    704×25
    25×32×125
    32×(25+125)
    88×125
    102×76
    58×98
    178×101-178
    84×36+64×84 75×99+2×75
    83×102-83×2
    98×199
    123×18-123×3+85×123
    50×(34×4)×3
    25×(24+16)
    178×99+178
    79×42+79+79×57
    7300÷25÷4
    8100÷4÷75
    16800÷120
    30100÷2100
    32000÷400
    49700÷700
    1248÷24
    3150÷15
    4800÷25
    21500÷125
    2356-(1356-721)
    1235-(1780-1665)
    75×27+19×2 5
    31×870+13×310
    4×(25×65+25×28)
    (a+b)+ c = a +(b+c)
    2.73 + 0.89 + 1.27
    4.37 + 0.28 + 1.63 + 5.72
    a-b-c = a -(b+c)
    10 - 0.432 - 2.568
    9.3 - 5.26 - 2.74
    13.4-(3.4+5.2)
    14.9-(5.2+4.9)
    18.32 - 5.47 - 4.32
    17.29 - 5.28 - 6.29
    (a × b)×c = a ×(b × c)
    25 × 6.8 × 0.04
    0.25 × 32 × 0.125
    6.4 × 1.25 × 12.5
    c ×(a+b)= ca + cb
    0.45 × 201
    0.58 × 10.1
    50.2 × 99
    4.7 × 9.9
    3.28 × 5.7 + 6.72 × 5.7
    2.1 × 99 + 2.1
    1.7 × 9.9 + 0.17
    23 × 0.1 + 2.3 × 9.9
    0.18 +4.26 -0.18 +4.26 ☆
    0.58 ×1.3 ÷ 0.58 ×1.3 ☆
    7.3 ÷4 + 2.7 × 0.25 ☆
    3.75 × 0.5 - 2.75 ÷ 2 ☆
    5.26 × 0.125 + 2.74 ÷ 8 ☆
    a ÷ b ÷ c = a ÷ (b × c) 6.3 ÷ 1.8
    9.5 ÷(1.9 × 8)
    12.8 ÷ (0.4 × 1.6)
    930 ÷ 0.6 ÷5
    63.4 ÷ 2.5 ÷ 0.4
    (7.7 + 1.54)÷ 0.7 ☆
    (11.7 + 9.9)÷ 0.9 ☆
    簡(jiǎn)便計(jì)算(加減法)
    6.9+4.8+3.1
    15.89+(6.75-5.89)
    7.85+2.34-0.85+4.66
    35.6-1.8-15.6-7.2
    13.75-(3.75+6.48)
    47.8-7.45+2.55
    66.86-8.66-1.34
    乘除法:0.25×16.2×4
    0. 25×32 ×0.125
    2 .5 ×(4 +0.4) (1.25-0.125)×8
    4.8×100.1
    4.2×99
    56.5×9.9+56.5
    5.4×11-5.4
    3.83×4.56+3.83×5.44
    7.09×10.8-0.8×7.09
    3.65×4.7-36.5×0.37
    13.7×0.25-3.7÷4
    10.7×16.1-1.1×10.7 +10.7 ×5
    4.9÷1.4
    3.9÷(1.3×5)
    63.4÷2.5÷0.4
    (7.7+1.4)÷0.7
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