Răspuns :

a)

180dg+3600dg=3780dg

3g+72g=75g

49kg-2,1kg=46,9kg

670dag-1dag=669 dag

b)

8 x 0,5g + 6 x 25 g= 4g + 150g= 154g

200hg : 4- 20 x 1,5 hg= 50hg - 3hg=47hg

800kg-(2x 6,5kg+ 4 x 0,75kg) 50=800kg- (13kg+3kg)50=800kg-16kg x 50=  800kg-800kg=0

90q+ [500q-(5q x 8q) x 9]=90q+ (500q - 40q x 9)=90q +(500q-360q)= 90q+ 140q=230q

Răspuns:

Explicație pas cu pas:

18 g + 36 dag = ? dg

180 dg + 3600 dg = 3780 dg

_________

30 dg + 72 g = ? g

3 g + 72 g = 75 g

_________

49 kg - 210 dag = ? hg

490 hg - 21 hg = 469 hg

_________

67 hg - 100 dg = ? dag

670 dag - 1 dag = 669 dag

_________

8 x 50 cg + 6 x 250 dg = ? g

400 cg + 1500 dg = 4 g + 150 g = 154 g

_________

20 000 g : 4 - 20 x 1 500 dg = ? hg

5 000 g - 30 000 dg = 50 hg - 30 hg = 20 hg

_________

8 q - (2 x 650 dag + 4 x 750 g) ?? 50 = ? kg

nu se vede ce operatie este inainte de 50

_________

9 t + [500 q - (500 kg - 5 x 800 hg) x 9] = ? q

90 q + [500 q - (500 kg  - 5 x 80 kg) x 9]

= 90 q + [500 q - (500 kg - 400 kg) x 9]

= 90 q + (500 q - 100 kg x 9)

= 90 q + (500 q - 900 kg)

= 90 q + (500 q - 9 q)

= 90 q + 491 q

= 581 q

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