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

Toán Lớp 5: Tính nhanh 16/15×17/16×18/17×2007/2006×2008/2007

Toán Lớp 5: Tính nhanh
16/15×17/16×18/17×2007/2006×2008/2007

Comments ( 2 )

  1. Giải đáp:
    16/15×17/16×18/17×2007/2006×2008/2007
    = (16 × 17 × 18 × 2007 × 2008)/(15 × 16 × 17 × 2006 × 2007)
    = (18 × 2008)/(15 × 2006)
    = (6 × 1004)/(5 × 1003)
    = 6024/5015

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