Question

Plsss. Dau coroana X2

Answer 1

1)1,2 m=1200 mm
4,26 hm=426.000 mm
0,001234 km=123400 mm
2)4000 dam²=40 hm²
350 m²=0,035 hm²
750×106 dm²=79500 dm²=0,0795 hm²
3)4 hm²=400 dam²=400 ari
9 km²=90000 dam²=90000 ari
120 m²=1,2 dam²=1,2 ari
4)5000 kg=5 t
800 g=0,8 kg=0,0008 t
390,42 dag=39042 kg=39,042 t
5)1000 dal=10000 l
0,005 kl=5 l
35 dm³=35 l
6)1 litru=0,1 hectolitri
0,036 hl=0,360 litri
5 litri-0,360 litri=4,64 litri
7)L=lungimea
l=lățimea
L=3l
P=72 cm
P=2L+2l
72=2×3l+2l
72=6l+2l
72=8l
l=72:8=9 cm
L=9×3=27 cm
8)2 kg=25 lei
1 kg=25:2=12,5 lei
12,5:4=3,125 lei costă 1/4 (un sfert de kg)
9)(7,20×104)×100=
74,880×100=7,488
10)D64:1,2,4,8,16,32,64
D2401:1,7,49,343,2401
D225:1,3,5,9,15,25,45,75,225