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

Toán Lớp 6: 84-[3³+(2³.5-5²)] 89.67+89.33-10²

Toán Lớp 6: 84-[3³+(2³.5-5²)]
89.67+89.33-10²

Comments ( 2 )

  1. 84 – [3³ + (2³ . 5 – 5²)]
    = 84 – [27 + (8 . 5 – 25)]
    = 84 – [27 + (40 – 25)]
    = 84 – [27 + (8 . 5 – 25)]
    = 84 – [27 + 15]
    = 84 – 42
    = 42
    89 . 67 + 89 . 33 – 10²
    = 89 . (67 + 33) – 100
    = 89 . 100 – 100
    = 100 . (89 – 1)
    = 100 . 88
    = 8800

  2. Giải đáp + giải thích các bước giải :  
    84-[3^3+(2^3 .5-5^2)] $\\$ = 84 – [27 + (8.5 – 25)]$\\$ = 84 – [27 + (40 – 25)] $\\$ = 84 – (27 + 15) $\\$ = 84 – 42 $\\$ = 42 $\\$ 89.67+89.33-10^2 $\\$ = 89.(67 + 33) – 100 $\\$ = 89.100 – 100 $\\$ = 100.(89-1) $\\$ = 100.88 $\\$ = 8800

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