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

Toán Lớp 4: tính bằng cách thuận tiện ; 456 x 11 – 456

Toán Lớp 4: tính bằng cách thuận tiện ; 456 x 11 – 456

Comments ( 2 )

  1. 456 × 11 – 456
    = 456 × 11 – 456 × 1
    = 456 × (11 – 1)
    = 456 × 10
    = 4560

  2. 456xx11-456
    =456xx10+(456-456)
    =4560+0
    =4560

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