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  • 六年級數(shù)學(xué)脫式計算題練習(xí)(帶答案)

    六年級數(shù)學(xué)脫式計算題練習(xí)(帶答案)
    數(shù)學(xué)人氣:713 ℃時間:2019-09-22 08:40:11
    優(yōu)質(zhì)解答
    1.(1/69+2/71)乘23+25除以71
    =1/69*23+2/71*23+25/71
    =1/3+(46/71+25/71)
    =1/3+1
    =4/3
    2.(1+1/2)乘(1-1/2)乘(1+1/3)乘(1-1/3)乘.乘(1+1/9)乘(1-1/9)
    =3/2*1/2*4/3*2/3...*10/9*8/9
    =1/2*10/9(中間的都約去了)
    =5/9
    3.1/2乘3+1/3乘4+.+1/19乘20
    =1/2-1/3+1/3-1/4+...+1/19-1/20
    =1/2-1/20
    =9/20
    4.1/27+505/2727+131313/272727
    =1/27+5*101/(27*101)+13*10101/(27*10101)
    =1/27+5/27+13/27
    =19/27
    5.100-98+96-94+.+4-2
    =(100-98)+(96-94)+...(4-2)
    =2+2+...+2(共有25個)
    =2*25
    =50
    五十二又二十五分之十一×79.45+159×47.56+七十九又二十分之十一×52.44
    =52.44×79.45+159×47.56+79.55×52.44
    =52.44×(79.45+79.55)+159×47.56
    =52.44×159+159×47.56
    =159×(52.44+47.56)
    =159×100
    =15900
    3)2002+2001-2000-1999+1998+1997-1996-1995+……+2+1
    =(2002-2000)+(2001-1999)+(1998-1996)+(1997-1995)+……+(6-4)+(5-3)+2+1
    =2+2+2+2+……+2+2(從3-2002共2000個數(shù),所以有1000個2)+2+1
    =1000×2+2+1
    =2003
    4,5兩題均用到一個轉(zhuǎn)換式1/(A×B)=1/(B-A)×(1/A-1/B)
    如1/15=1/(3×5)=1/(5-3)×(1/3-1/5)=1/2×(2/15)=1/15可驗證一下
    4)(1×2分之一)+(2×3分之一)+(3×4分之一)+……+(10×11分之一)
    =1/(1×2)+1/(2×3)+1/(3×4)+……+1/(10×11)
    =(1-1/2)+(1/2 - 1/3)+(1/3 - 1/4)+……+(1/10 - 1/11)
    =1-1/11
    =10/11
    5)三分之一+十五分之一+三十五分之一+六十三分之一+九十九分之一
    =1/(1×3)+1/(3×5)+1/(5×7)+1/(7×9)+1/(9×11)
    =1/2×(1-1/3)+1/2×(1/3-1/5)+1/2×(1/5-1/7)+1/2×(1/7-1/9)+1/2×(1/9-1/11)
    =1/2×(1 - 1/3 + 1/3 - 1/5 + 1/5 - 1/7 + 1/7 - 1/9 + 1/9 - 1/11)
    =1/2×(1-1/11)
    =1/2×10/11
    =5/11
    6)一又二分之一-六分之五+十二分之七-二十分之九+三十分之十一-四十二分之十三+五十六分之十五
    (根據(jù)提示,1又1/2=1+1/2,+1/2+1/3=5/6……)
    =(1+1/2)-(1/2+1/3)+(1/3+1/4)-(1/4+1/5)+(1/5+1/6)-(1/6+1/7)+(1/7+1/8)
    =1+ 1/2 - 1/2 - 1/3 + 1/3 + 1/4 - 1/4 - 1/5 + 1/5 + 1/6 - 1/6 - 1/7 + 1/7 + 1/8
    =1+1/8
    =9/8 2010-2-8 20:141.125*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
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