Question

помогите решить

0,6 к 3 = ..... ; 3/5 от 0,1 = ..... ; 4/5 к 5 = .... ; 5/8 от 0,6 = .... ; 24 мин к 1 часу = ...... ;

4/5 от 3 целых 1/2 = .... ; 6,2 * 2/5 = .... ;

Answer 1

$0,6$ к $3=0,6:3=6:30= frac{6}{30}= frac{1}{5}=0,2;$
$frac{3}{5}$ от $0,1= frac{3}{5}*0,1= frac{3}{5}* frac{1}{10}= frac{3*1}{5*10}= frac{3}{50}= frac{6}{100}=0,06;$
$frac{4}{5}$ к $5= frac{4}{5}:5= frac{4}{5}: frac{5}{1}= frac{4}{5}* frac{1}{5}= frac{4}{25}= frac{16}{100}=0,16;$
$frac{5}{8}$ от $0,6= frac{5}{8}*0,6= frac{5}{8}* frac{6}{10}= frac{5*6}{8*10}= frac{1*3}{4*2}= frac{3}{8}= frac{375}{1000}=0,375;$
$24$ мин к $1$ часу $=24:60= frac{24}{60}= frac{4}{10}=0,4$ минут$;$
$frac{4}{5}$ от $3 frac{1}{2}= frac{4}{5}*3 frac{1}{2}= frac{4}{5}* frac{7}{2}= frac{4*7}{5*2}= frac{2*7}{5*1}= frac{14}{5}=2 frac{4}{5}=2 frac{8}{10}=2,8;$
$6,2* frac{2}{5}=6 frac{2}{10}* frac{2}{5}= frac{62}{10}* frac{2}{5}= frac{62*2}{10*5}= frac{62*1}{5*5}= frac{62}{25}=2 frac{12}{25}=2 frac{48}{100}=2,48.$