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

Toán Lớp 5: mình đố các bạn 5m 5dm ==–..dm

Toán Lớp 5: mình đố các bạn 5m 5dm =………………….dm

Comments ( 2 )

  1. 5m5dm=55dm
    Ta có: 1m=10dm
    Suy ra 5m=50dm
    5m5dm
    =50dm+5dm=55dm
     

  2. 1m = 10dm
    ⇒ 5m=10dm x 5 = 50dm
    vậy 5m 5dm = 50dm + 5dm = 55 dm

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