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

Toán Lớp 6: 120×64+36×120=? 23×27+23×42+31×23=?

Toán Lớp 6: 120×64+36×120=?
23×27+23×42+31×23=?

Comments ( 2 )

  1. a) 120 x 64 + 36 x 120
    = 120 x (64 + 36)
    = 120 x 100
    = 12000
    b) 23 x 27 + 23 x 42 + 31 x 23
    = 23 x (27 + 42 + 31)
    = 23 x 100
    = 2300
     

  2. 120 xx 64 + 36 xx 120
    = 120 xx ( 64 + 36)
     = 120 xx 100
    = 12000
    23 xx 27 + 23 xx 42 + 31 xx 23
    = 23 xx ( 27 + 42 + 31)
    = 23 xx 100
    = 2300
    #caty09

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

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