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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 5: (1 1/3-1 1/4):1 1/3+ 1 1/4 2 1/3 : (1 1/6+1 1/4)+1 1/2 1 1/3 x 2 1/4 +1 1/3x 6/8

Tháng Hai 3, 2023 Toán học 2 Comments 0 views

Toán Lớp 5: (1 1/3-1 1/4):1 1/3+ 1 1/4
2 1/3 : (1 1/6+1 1/4)+1 1/2
1 1/3 x 2 1/4 +1 1/3x 6/8

Comments ( 2 )

  1. landinhngoc97
    landinhngoc97
    3 Tháng Hai, 2023 at 6:36 chiều
    Reply
    Giải đáp:
    $\\$
    1,
    (1 1/3 – 1 1/4) ÷ 1 1/3 + 1 1/4
    = (4/3 – 5/4) ÷ 4/3 + 5/4
    = (4/3 – 5/4) × 3/4 + 5/4
    = (16/12 – 15/12) × 3/4 + 5/4
    = 1/12 × 3/4 + 5/4
    = 3/48 + 5/4
    = 1/16 + 5/4
    = 1/16 + 20/16
    = 21/16
    2,
    2 1/3 ÷ (1 1/6 + 1 1/4) + 1 1/2
    = 7/3 ÷ (7/6 + 5/4) + 3/2
    = 7/3 ÷ (14/12 + 15/12) + 3/2
    = 7/3 ÷ 29/12 + 3/2
    = 7/3 × 12/29 + 3/2
    = 28/29 + 3/2
    = 56/58 + 87/58
    = 143/58
    3,
    1 1/3 × 2 1/4 + 1 1/3 × 6/8
    = 4/3 × 9/4 + 4/3 × 6/8
    = 3 + 1
    =4
     

  2. minhhaanh
    minhhaanh
    3 Tháng Hai, 2023 at 6:35 chiều
    Reply
    Giải đáp:
        ( 1 1/3 – 1 1/4) : 1 1/3 + 1 1/4
    = (4/3 – 5/4 ) : 4/3 + 5/4
    = ( 16/12 – 15/12) : 4/3 + 5/4
    = 1/12 : 4/3 + 5/4
    = 1/12 .3/4 + 5/4
    = 1/16 + 5/4
    = 1/16 + 20/16
    = 21/16
        2 1/3 : (1 1/6+1 1/4)+1 1/2
    = 7/3 : ( 7/6 + 5/4 ) + 3/2
    = 7/3 : ( 28/24 + 30/24) + 3/2
    = 7/3 : 29/12 + 3/2
    = 7/3 . 12/29 + 3/2
    = 28/29 + 3/2
    = 56/ 58 + 87/58
    =143/58
       1 1/3 \times 2 1/4 +1 1/3 \times 6/8
    = 4/3 \times 9/4 + 4/3 \times 6/8
    =3 + 1
    = 4
    mong ctlhn cho nhóm ạ~~
     

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222-9+11+12:2*14+14 = ? ( )

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