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

Toán Lớp 3: 1km = mm 1cm= mm 13 km = mm 5 dm = cm

Toán Lớp 3: 1km = mm
1cm= mm
13 km = mm
5 dm = cm

Comments ( 2 )

  1. 1km=…mm
    =>1km=1000000mm
    Vì 1km=1000cm;1cm=1000mm
    ——
    1cm=…mm
    =>1cm=1000mm
    Vì 1cm=1000mm
    —–
    13km=…mm
    =>13km=13000000mm
    Vì 1km=1000cm;1cm=1000mm
    ——-
    5dm=…cm
    =>5dm=50cm
    Vì 1dm=10cm

  2. Đổi :
    1km = 1000000 mm
    1cm = 10 mm
    13 km = 13 000 000
    5dm = 50 cm
    Công thức :
    1km = 1 000 000 mm
    1 cm = 10 mm
    1dm = 10 cm
     

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