Penjelasan dengan langkah-langkah:

3 dam/menit = 0,5 m/detik

Penjelasan;

1 dam = 10 m, maka;

3 × 10 m = 30 m

1 menit = 60 detik,

30 m/60 detik = 0,5 m/detik

Jadi; 3 dam/menit = 0,5 m/detik

12 cm/jam = 2 mm/menit

Penjelasan;

1 cm = 10 mm, maka;

12 × 10 mm = 120 mm,

1 jam = 60 menit

120 mm/60 menit = 2 mm/menit

Jadi; 12 cm/jam = 2 mm/menit

300 dm/menit = 1.800 m/jam

Penjelasan;

1 dm = 0,1 m, maka;

300 × 0,1 m = 30 m,

1 menit = 1/60 jam,

30 m/1/60 jam = 30 m × 60/jam = 1.800 m/jam

Jadi; 300 dm/menit = 1.800 m/jam

10 hm/detik = 100.000 cm/detik

Penjelasan;

1 hm = 10.000 cm, maka;

10 × 10.000 cm = 100.000 cm,

Jadi; 10 hm/detik = 100.000 cm/detik

6 km/jam = 10 dam/menit

Penjelasan;

1 km = 100 dam, maka;

6 × 100 dam = 600 dam,

1 jam = 60 menit,

600 dam/60 menit = 10 dam/menit

Jadi; 6 km/jam = 10 dam/menit