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

Toán Lớp 5: 20,19 x 135 – 201,9 x 5 + 20,19 x 15

Toán Lớp 5: 20,19 x 135 – 201,9 x 5 + 20,19 x 15

Comments ( 2 )

  1. 20,19 × 135 – 20,19 × 10 × 5 + 20,19 × 15  
    = 20,19 × ( 135 – 10 × 5 + 15 )  
    = 20,19 × 100
    = 2019   

  2. 20,19 x 135 – 201,9 x 5 + 20,19 x 15
    = 20,19 x ( 135 – 10 x 5 + 15 )
    = 20,19 x 100
    = 2019

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