Răspuns:
Salut :}
a) 18 g +36 dag = ? dg
18 g = 180 dg
36 dag = 3600 dg
180 dg +3600 dg = 3780 dg
30 dg + 72 g =? g
30 dg = 3 g
3 g + 72 g =75 g
49 kg - 210 dag =? hg
210 dag = 21 hg
49 kg = 490 h
67 hg - 100 dg = ? dag
67 hg = 670 dag
100 dg = 1 dag
670 dag - 1dag = 669 dag
b) 8×50 cg +6× 250 dg=? g
50 cg = 5 g
250 dg = 25 g
8×5 g+ 6×25 g=
40g + 150 g = 190 g
20000 g ÷ 4 - 20 × 1500 dg = ? hg
20000 g = 200 hg
1500 dg = 15 hg
200 hg : 4 - 20 × 15bhg =
50 hg - 300 hg = 250 hg
8 q -( 2×650 dag + 4 × 750 g) 50 = ? kg
800 kg - (1300 dag +3000 g ) × 50 =
800 kg - ( 13 kg + 3kg)× 50=
800 kg - 16 kg × 50 =
800 kg - 800 kg = 0 kg
9 t+ [500 q -(500 kg - 5× 800 hg ) ×9]=? q
90 q + [500q-(500 kg - 4000 hg) × 9 ]=
90 q + [500 q -( 500 kg - 400 kg ) × 9]=
90 q +( 500 q - 100kg × 9 ) =
90 q + (500 q -900 kg)=
90 q + (500 q - 9 q) =
90 q + 491 q = 581 q
Baftă!
