求分数、小数的口算、解方程和混合运算题

1个回答

  • 分数,小数的口算

    1 0.75/3/4/7/9

    2 0.125/32/49/8

    3 2/5+9又 4/5+99又4/5

    4 (1.6+3又1/5)*1/8

    5 1/2*1/3/1/2*1/3

    6 21.7-(15.7+2又1/3)

    7 6又1/3+4又5/8+5.375+3又2/3

    8 1/7*(98*(1/4)*2)

    9.25%*((23+2%)*4)

    10.(30+20%)/2

    11.12*3/(25+20%)

    12.30/(3+40%)

    13 .27/8*16*10%

    14 1/(1又1/5-0.2)

    15 (1/2+1/3-5/6)*12

    16 36*(1-75%)

    17 1.1-0.75/3/4

    18 1000/125*8-1

    19 4/9*4/9

    20 3.25/2.5/4

    21 38又3/4-15.38+61.25-4.62

    22 13又2/13-2.25-7又3/4

    23 2/13*(0.15*13)

    24 (1/6+1/8)*24

    25 63*(1/7)*30%

    26.(0.75+0.2)/0.25*25%

    27 64.5*1/11+1/11*34又1/2

    28 2.5*3/7*0.4*2又1/3

    29 13.76-(7/12+1.76+1又5/12)

    30 0.32*6.7+3.2*0.43-0.32

    解方程

    1、4X-5=3

    4X=8

    X=2

    2、3X+150=1050

    3X=900

    X=300

    3、9*1.8-12X=1.8

    16.2-12X=1.8

    -12X=-14.4

    1:X+3X-5=3

    2:3=1050

    3:9*1.8-12X=1.8

    4:2X÷8=1.25

    12X=14.4

    X=1.2

    4、2X=1.25*8

    2X=10

    X=5

    混合运算

    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

    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

    dui