5. Efectuează transformările.
a ) 2 000 mg = .......g
12 kg = ......dag
980 cg = ......dg
190 hg = ......dag.
b ) 500 ml = .....dl
60 hl = ......dal
600 cl = ......l
700 hl = .......l.
c) 1 min 27 s = .......s
2 h 37 min = .......min
75 min = ......h ...... min.
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a) 2 000 mg = 2 g; 12 kg = 120 dag; 980 cg = 98 dg; 190 hg = 19 dag.
2g=2000mg:10000; 120 dag = 12 x 100; 98dg = 980 cg : 10;
19 dag = 190:10.
b) 500 ml = 50 dl; 60 hl = 6000 dal; 600 cl = 6 l; 700 hl = 70 l.
50 dl = 500 : 10; 6000 dal = 60 x 100; 6l = 600 : 100; 70l = 700:10.
c) 1 min 27 s = 87 s; 2 h 37 min = 157 min; 75 min = 1 h 15 min
60s+27s=87 s; 2 x 60min + 37min = 257 min; 75min= 60h + 15 min