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

Toán Lớp 5: Đúng ghi Đ, sai ghi S: a) 3cm= 3/10dm… c) 1367mm= 1367/1000m… b) 312/1000m= 312 c

Toán Lớp 5: Đúng ghi Đ, sai ghi S:
a) 3cm= 3/10dm… c) 1367mm= 1367/1000m…
b) 312/1000m= 312 cm d) 25dm= 25/10 m

Comments ( 2 )

  1. a) 3 cm = 3/10 dm    Đ    ( vì 10 cm = 1dm )
    b)  1367mm= 1367/1000m   Đ ( vì 1000mm = 1dm )
    c)  312/ 1000 m =312cm   S   ( vì 100cm = 1dm )
     d)  25dm = 25/10 m      Đ      (vì 10dm =1m )

  2. a) 3cm = $\dfrac{3}{10}$dm | Đ
    b) $\dfrac{312}{1000}$m = 312cm | S
    c) 1367mm = $\dfrac{1367}{1000}$m | Đ
    d)25dm = $\dfrac{25}{10}$m | Đ

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