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

Toán Lớp 5: Tính nhanh : d ) 497,625 – 215,46 x ( 2 x 15,9 – 6 ) + 215,46 x 2 x 15,9 – 215,46 x 6

Toán Lớp 5: Tính nhanh :
d ) 497,625 – 215,46 x ( 2 x 15,9 – 6 ) + 215,46 x 2 x 15,9 – 215,46 x 6

Comments ( 1 )

  1. 497,625 – 215,46 x ( 2 x 15,9 – 6 ) + 215,46 x 2 x 15,9 – 215,46 x 6
    = 497,625 – 215,46 x 25,8 + 215,46 x 31,8 – 215,46 x 6
    = 497,625 – 215,46 x (25,8 + 31,8 – 6)
    = 497,625 – 215,46 x 51,6
    = 497,625 – 11117,736
    = -10620,111
     

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