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

Toán Lớp 6: Tính a) – ( -2 ) – 5 = b) – 243 – ( -143) = c) -6 – 15 =

Toán Lớp 6: Tính
a) – ( -2 ) – 5 =
b) – 243 – ( -143) =
c) -6 – 15 =

Comments ( 2 )

  1. a)
    – ( -2 ) – 5
    = 2 – 5
    = -3
    b)
    -243 – ( -143 )
    = -243 + 143
    = -100
    c)
    -6 – 15
    = -21

  2. a) -(-2) – 5= 2 – 5 = -3
    b) -243 – (-143) = -(243 – 143) = -100
    c) -6 -15 = -(6 + 15) =-21
     

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

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