Question

va rogggg coroana multumesc

Answer 1

1. a) 7m=70dm=700cm
5m=50dm=5000mm
b) 1000 mm= 100 cm = 10 dm
800 cm=80 dm=8000 mm
c) 900 dam = 90 hm = 9km
9km=90hm=900dam
2. 180 dam+320 dam= 500 dam = 5000 m
1000m - 50 dam = 100 dam - 50 dam = 50 dam6 x 250 dam = 1500 dam = 150 hmb) 4m+32 dm = 72 dm   42 m - 30 dm = 39 m   6 x 220 dm = 1320 dm = 132 m
3. a) 7m=70 dm    b) 5 km = 500 dam      9m=900 cm      3000 m = 30 hm      c) 2 000 mm = 2 m      8 000 m = 800 dam
4. a) 4 dm + 6 dm = 1 m      770 mm + 330 mm = 1 m   b) 9 dm + 10 cm = 1 m      80 cm + 2 dm = 1 m   c) 6 cm + 10 dm + 300 cm = 40.6 dm      9 dm + 10 cm + 2000mm = 3 m    5. l= 50 m =) Perimetrul la patrat = l+l+l+l = 50 m + 50 m + 50 m + 50 m=                                                5 dam + 5 dam + 5 dam + 5 dam = 20 dam6. L=(50 hm - 5x60dam):20m=   L=(5000 m - 3000 m) :20m=   L=2000m:20m= 100 bucati7.86 dam - 400m= 86 dam - 40 dam = 46 dam  1km-46 dam = 100 dam - 46 dam = 54 dam
8. 500 dm = Anca   5 dm = Mara   3 supra 4 dam = 300 supra 400 = 0.75 dm = Irina   1 supra 2 m = 10 supra 20 = 0.5 dm = Alina   1 supra 4 dam = 100 supra 400 dm = 0.25 dm = Cristina         3 supra 4 dam = 300 supra 400 = 0.75 dm = Irina