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

Toán Lớp 4: tính nhanh 118 * ( 36 + 62 ) – 18 * ( 62 + 36)

Toán Lớp 4: tính nhanh 118 * ( 36 + 62 ) – 18 * ( 62 + 36)

Comments ( 2 )

  1. 118 * ( 36 + 62 ) – 18 * ( 62 + 36)
    = 118 * ( 36 + 62 ) – 18 * ( 36 + 62 )
    = ( 118 – 18 ) * ( 36 + 62 )
    = 100 * 98
    = 9800
     

  2. 118 * ( 36 + 62 ) – 18 * ( 62 + 36)
    = 118 * ( 36 + 62 ) – 18 * ( 36 + 62 )
    = ( 36 + 62 ) * ( 118 – 18 )
    = 98 * 100
    = 9800

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

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