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

Toán Lớp 4: tính bằng cách thuận tiên nhất: 2021 x 21+2021×79

Toán Lớp 4: tính bằng cách thuận tiên nhất: 2021 x 21+2021×79

Comments ( 2 )

  1. 2021 × 21 + 2021 × 79
    = 2021 × ( 21 + 79 )
    = 2021 × 100
    = 202 100

  2. 2021 × 21 + 2021 × 79
    = 2021 × ( 21 + 79 )
    = 2021 × 100
    = 202 100
     

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