Question

40dm+20cm=..mm,35mm+45mm=..cm, 100m-30dm=..mm, 32dam-46m=...m, 12km+61km=..dam,100km-34km=...dam,4800mm-2000cm=...dm, 12000m-70km=...km,8000dm=...dam,50000dm=...km​

Answer 1

Răspuns:

Explicație pas cu pas:

40dm+20cm= 4000 mm + 200 mm = 4200 mm

1 dm = 10 cm = 100 mm

40 dm x 100 = 4000 mm

1 cm = 10 mm

20 cm x 10 = 200 mm

35mm+45mm= 3,5 cm + 4,5 cm = 8 cm

1 cm = 10 mm

35 mm : 10 = 3,5 cm

45 mm : 10 = 4,5 cm

100m-30dm= 100000 mm + 3000 mm = 103000 mm

1 m = 10 dm = 100 cm = 1000 mm

100 m x 1000 = 100000 mm

1 dm = 10 cm = 100 mm

30 dm x 100 = 3000 mm

32dam-46m= 320 m - 46 m = 274 m

1 dam = 10 m

32 dam x 10 = 320 m

12km+61km= 1200 dam + 6100 dam = 7300 dam

1 km = 10 hm = 100 dam

12 km x 100 = 1200 dam

61 km x 100 = 6100 dam

100km-34km= 10000 dam - 3400 dam = 6600 dam

1 km = 10 hm = 100 dam

100 km x 100 = 10000 dam

34 km x 100 = 3400 dam

4800mm-2000cm= 48 dm - 200 dm = - 152 dm

1 dm = 10 cm = 100 mm

4800 mm : 100 = 48 dm

1 dm = 10 cm

2000 cm : 10 = 200 dm

12000m-70km= 12 km - 70 km =  - 58 km

1 km = 10 hm = 100 dam = 1000 m

12000 m : 1000 = 12 km

8000dm = 80  dam

1 dam = 10 m = 100 dm

8000 dm : 100 = 80 dam

50000dm = 5 km​

1 km = 10 hm = 100 dam = 1000 m = 10000 dm

50000 dm : 10000 = 5 km