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2个回答

  • 1555:5 × (5 - 1 ÷ 5)

    2:5 × (5 - (1 ÷ 5))

    3:(5 - 1 ÷ 5) × 5

    4:(5 - (1 ÷ 5)) × 5

    37913:7 × 9 - 3 × 13

    2:(7 × 9) - 3 × 13

    3:7 × 9 -(3 × 13)

    4:(7 × 9) - (3 × 13)

    5:7 × 9 - 13 × 3

    6:(7 × 9) - 13 × 3

    7:7 × 9 -(13 × 3)

    8:(7 × 9) - (13 × 3)

    9:(7 - 13 ÷ 3) × 9

    10:(7 - (13 ÷ 3)) × 9

    11:9 × 7 - 3 × 13

    12:(9 × 7) - 3 × 13

    13:9 × 7 -(3 × 13)

    14:(9 × 7) - (3 × 13)

    15:9 × 7 - 13 × 3

    16:(9 × 7) - 13 × 3

    17:9 × 7 -(13 × 3)

    18:(9 × 7) - (13 × 3)

    19:9 × (7 - 13 ÷ 3)

    20:9 × (7 - (13 ÷ 3))

    2699:(6 ÷ 9 + 2) × 9

    2:((6 ÷ 9) + 2) × 9

    3:(2 + 6 ÷ 9) × 9

    4:(2 + (6 ÷ 9)) × 9

    5:2 × (9 - 6 + 9)

    6:2 × ((9 - 6) + 9)

    7:2 × (9 - (6 - 9))

    8:2 × (9 + 9 - 6)

    9:2 × ((9 + 9) - 6)

    10:2 × (9 + (9 - 6))

    11:(9 - 6 + 9) × 2

    12:((9 - 6) + 9) × 2

    13:(9 - (6 - 9)) × 2

    14:9 × (6 ÷ 9 + 2)

    15:9 × ((6 ÷ 9) + 2)

    16:9 × (2 + 6 ÷ 9)

    17:9 × (2 + (6 ÷ 9))

    18:(9 + 9 - 6) × 2

    19:((9 + 9) - 6) × 2

    20:(9 + (9 - 6)) × 2

    551013:5 ÷ 5 + 10 + 13

    2:(5 ÷ 5) + 10 + 13

    3:(5 ÷ 5 + 10) + 13

    4:((5 ÷ 5) + 10) + 13

    5:5 ÷ 5 +(10 + 13)

    6:(5 ÷ 5) + (10 + 13)

    7:5 ÷ 5 + 13 + 10

    8:(5 ÷ 5) + 13 + 10

    9:(5 ÷ 5 + 13) + 10

    10:((5 ÷ 5) + 13) + 10

    11:5 ÷ 5 +(13 + 10)

    12:(5 ÷ 5) + (13 + 10)

    13:(5 - 13 ÷ 5) × 10

    14:(5 - (13 ÷ 5)) × 10

    15:10 + 5 ÷ 5 + 13

    16:(10 + 5 ÷ 5) + 13

    17:(10 + (5 ÷ 5)) + 13

    18:10 + (5 ÷ 5) + 13

    19:10 + (5 ÷ 5 + 13)

    20:10 + ((5 ÷ 5) + 13)

    21:10 × (5 - 13 ÷ 5)

    22:10 × (5 - (13 ÷ 5))

    23:10 + 13 + 5 ÷ 5

    24:(10 + 13) + 5 ÷ 5

    25:10 + (13 + 5 ÷ 5)

    26:10 + (13 + (5 ÷ 5))

    27:10 + 13 +(5 ÷ 5)

    28:(10 + 13) + (5 ÷ 5)

    29:13 + 5 ÷ 5 + 10

    30:(13 + 5 ÷ 5) + 10

    31:(13 + (5 ÷ 5)) + 10

    32:13 + (5 ÷ 5) + 10

    33:13 + (5 ÷ 5 + 10)

    34:13 + ((5 ÷ 5) + 10)

    35:13 + 10 + 5 ÷ 5

    36:(13 + 10) + 5 ÷ 5

    37:13 + (10 + 5 ÷ 5)

    38:13 + (10 + (5 ÷ 5))

    39:13 + 10 +(5 ÷ 5)

    40:(13 + 10) + (5 ÷ 5)

    241010:(4 ÷ 10 + 2) × 10

    2:((4 ÷ 10) + 2) × 10

    3:(2 + 4 ÷ 10) × 10

    4:(2 + (4 ÷ 10)) × 10

    5:10 × (4 ÷ 10 + 2)

    6:10 × ((4 ÷ 10) + 2)

    7:10 × (2 + 4 ÷ 10)

    8:10 × (2 + (4 ÷ 10))

    55711:5 × (7 - 11 ÷ 5)

    2:5 × (7 - (11 ÷ 5))

    3:(7 - 11 ÷ 5) × 5

    4:(7 - (11 ÷ 5)) × 11

    25510:(5 - 2 ÷ 10) × 5

    2:(5 - (2 ÷ 10)) × 5

    3:5 × (5 - 2 ÷ 10)

    4:5 × (5 - (2 ÷ 10))

    3377:(3 + 3 ÷ 7) × 7

    2:(3 + (3 ÷ 7)) × 7

    3:(3 ÷ 7 + 3) × 7

    4:((3 ÷ 7) + 3) × 7

    5:7 × (3 + 3 ÷ 7)

    6:7 × (3 + (3 ÷ 7))

    7:7 × (3 ÷ 7 + 3)

    8:7 × ((3 ÷ 7) + 3)

    4477:(4 - 4 ÷ 7) × 7

    2:(4 - (4 ÷ 7)) × 7

    3:7 × (4 - 4 ÷ 7)

    4:7 × (4 - (4 ÷ 7))