Question

Transformati: a)1,47=..... b) 1,(7)=..... c)1,2(31)=.... d)12,7m^3=...hl e)99342s+...zi ...h ...min ...s f)7,43 kg+ 450g=... dag g)21 h 16 min 25 s: 5=...h ...min ...s

Answer 1

 [tex]a).\;1,47=\frac{147}{100}\;;\;\\b).\;1,(7)=\frac{17-1}{9}=\frac{16}{9}\;;\\c).\;1,2(31)=\frac{1231-12}{990}=\frac{1219}{990}\;;\\ d).\;12,7m^3=12700dm^3=12700\,l\,=127\,hl\;;\\ e).\;99342\,s=\;\; ...\;\\ 99342:(3600*24)=99342:86400=1(zi)\;;\;rest=12942(s)\\ 12942:3600=3(ore)\;;\;rest=2142(s)\;;\\ 2142:60=35(min)\;;\;rest=42(s)\;\rightarrow99342s=1zi3h35min42s\;;\\ f).7,43kg+450g= 7430g+450g=7880g=788dag\;;\\ g).\;21h16min25s:5=\,...\\
21h:5=4h\;;\;rest=1h=60min\;;\;60min+16min=76min\;;\;76min:5=12min\;;\;rest=16min\;;\;\\
16:60s+25s=0,2(6)s+25s=25,2(6)s\;;\\
21h16min25s:5=4h\,16min\,25,2(6)s\;;[/tex]