70道口算题~10道解方程~

1个回答

  • 2.8×0.4= 1.12

    14-7.4=6.6,

    1.92÷0.04=48,

    0.32×500=160,

    0.65+4.35= 5

    10-5.4=4.6,

    4÷20=0.2,

    3.5×200=700,

    1.5-0.06=1.44

    0.75÷15=0.05,

    0.4×0.8=0.32,

    4×0.25=1,

    0.36+1.54=2

    1.01×99=99.99,

    420÷35=12,

    25×12=300,

    135÷0.5=270

    3/4 + 1/4 =1,

    2 + 4/9 =22/9,

    3 - 2/3 =7/3,

    3/4 - 1/2= 1/4

    1/6 + 1/2 -1/6 =1/2,

    7.5-(2.5+3.8)=1.2,

    7/8 + 3/8 =5/4

    3/10 +1/5 =1/2,

    4/5 - 7/10 =1/10,

    2 - 1/6 -1/3 =1.5

    0.51÷17=0.03,

    32.8+19=51.8,

    5.2÷1.3=4,

    1.6×0.4= 0.64

    4.9×0.7=3.43,

    1÷5=0.2,

    6÷12=0.5,

    0.87-0.49=0.38

    1.(1+1/2)(1+1/3)(1+1/4).(1+1/100)

    2.(1-1/2)(1-1/3)(1-1/4).(1-1/100)

    3.8+2-8+2

    4.25*4/25*4

    5.7.26-(5.26-1.5)

    6.286+198

    7.314-202

    8.526+301

    9.223-99

    10.6.25+3.85-2.125+3.875

    11.9-2456*21

    12.0.5/11.5-4*2.75

    13.1/2×3/5

    14.3.375+5.75+2.25+6.625

    15.1001-9036÷18

    16.3.8×5.25+14.5

    17.2.1*4.3+5.7*2.1

    18.30×1/3

    19.102*45-328

    20.2/3×12

    21.2.8*3.1+17.6/8

    22.3/5×5/6

    23.(50-12.5)/2.5

    24.2/5×1/3

    25.6110*47+639

    26.1/2-1/6

    27.3.5*2.7-52.2/18

    28.1/7×1/5

    29.3.375*0.97+0.97*6.625

    30.25×4/5

    31.6.54+2.4+3.46+0.6

    32.5/6-1/2

    33.95.6*1.8+95.6*8.2

    34.1/2×1/5

    35.600-420/12

    36.344/3.6-5.4*0.25

    37.16/2+30/2+90/6

    38.3001-1998.

    39.5000-105*34

    40.0.15/0.25+0.75*1.2

    41.(1/2+1/3+1/4)*0.24

    42.(25+4)*4

    43.300-4263/21

    44.0.81/0.25+5.96

    45.403÷13×27

    46.1.5×4.2-0.75÷0.25

    47.3.27×4 +3.27×5.7

    48.(1.2+ 1.8)×4.51025-768÷32

    49.0.25×80-0.45÷0.9

    50.1025-768÷32

    51.0.25*2.69*4

    52.2348+275*16

    53.2/9*15/8-1/12*9/5

    54.2.4+2.4*(5.375-3.375)

    55.645-45*12

    56.0.15+1.2/0.24-0.45

    57.3.75-(2.35+0.25/1.25)

    58.76*1/4+23*25/100+0.25

    59.10-2.87-7.13

    60.0.96+9.6*9.9

    61.7.5-5.7*1/3

    62.12.37-3.25-6.75

    63.16*6.8+2.2*16+16

    64.401*19+284

    65.58.7-16.65/3.7

    66.0.4*4.7*2.5+(2.3+5.3)

    67.9.31-1.125-7.875

    68.640+128*45

    69.8.2*1.6-0.336/4.2

    70.400*(0.62+0.08)

    (1)53χ+2.4χ=6

    (2)3.5:χ=5:4.2

    (3)1.8χ-χ=2.4

    (4)x10=8.05.2

    (5)6×3-1.8χ=7.2

    (6)17-5χ=2.4+351

    (7)4x=52.1

    (8) χ-41χ=83

    (9)12.6×65-2χ=8

    (10)2.1x=6.05.1

    (11)53×21-χ=51

    (12)32 χ+50%=42

    (13)4χ-13=31

    (14)4.5+8χ=2721

    (15)2χ+4.3×3=1421

    (16) χ×(1-83)=132

    (17)χ-41χ=83

    (18)321÷4χ=2.5

    (19)4.0x=65.1