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

Toán Lớp 6: 1.46.Tính: a)235+78-142; b)14+2.82; c){23+[1+(3-1)2]}÷13.

Toán Lớp 6: 1.46.Tính:
a)235+78-142;
b)14+2.82;
c){23+[1+(3-1)2]}÷13.

Comments ( 2 )

  1. 1,46
    a) 235 + 78 – 142
    = 313 – 142
    = 171
    b) 14 + 2 . 82
    = 14 + 164
    = 178
    c) {23 + [1 + (3-1)2]} : 13
    = {23 + [1 + 2 . 2]} : 13
    = {23 + [1 + 4]}: 13
    = {23 + 5} : 13
    =28 : 13
    = 28/13

  2. a)235+78-142
    = 171
    b)14+2.82
    = 14 + 164 
    = 178
    c){23+[1+(3-1)2]}÷13
    = {23+[1+2.2]} : 13
    = {23 + 5} : 13
    = 28 : 13 = 28/13

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

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