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

Toán Lớp 5: a ) 5/6+5/6+5/6 b) 7/8 x 3/4 c ) 9/10 + 1/2 +2/5

Toán Lớp 5: a ) 5/6+5/6+5/6
b) 7/8 x 3/4
c ) 9/10 + 1/2 +2/5

Comments ( 2 )

  1. a) 5/6 + 5/6 + 5/6
    = { 5 + 5 + 5 }/6
    = 15/6
    = 5/2
    b) 7/8 × 3/4
    = { 7 × 3 }/{ 8 × 4 }
    = 21/32
    c) 9/10 + 1/2 + 2/5
    = 9/10 + 5/10 + 4/10
    = { 9 + 5 + 4 }/10
    = 18/10
    = 9/5

  2. a) 5/6 + 5/6 + 5/6
    = 5/6 + 5/6 + 5/6
    = 5/2
    b) 7/8 x 3/4
    = 7/8 x 3/4
    = 21/32
    c) 9/10 + 1/2 + 2/5
    = 9/10 + 5/10 + 4/10
    = 9/5
    Vậy :
    a) 15/6
    b) 21/32
    c)9/5
    Cho mình TLHN nha

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

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