Question

Нормер 1
а) 3/5*1/2 =
б) 2 1/4*5/18 =
в) 3/4*6 =
Номер 2
а)3/10 : 2/7 =
в) 10 : 1 1/4=
Номер 3
(2 2/5) и 2 в квадрате

Answer 1

1.а) $frac{3}{5}* frac{1}{2} = frac{3}{10} = 0.3$
 б) $2 frac{1}{4} * frac{5}{18} = frac{9*5}{72} = frac{45}{72}$
 в) $frac{3}{4} *6 = frac{18}{4} =4,5$
2.а) $frac{3}{10} : frac{2}{7} = frac{3*7}{10*2} = frac{21}{20} =1.05$
б) $10 : 1 frac{1}{4} = 10 : frac{5}{4} = frac{10*4}{5} = frac{40}{5} =8$
 в) $( 2frac{2}{5} )^{2} = ( frac{12}{5})^{2} = frac{144}{25} =5.76$ 

Answer 2

А) 3/5*1/2= 3/10 = 0,3
Б) 9/4*5/18= 1/4*5/2= 5/8= 0,625
В) 3/4*6= 3/2* 3= 9/2= 4 1/2= 4,5
А) 3/10:2/7= 3/10*7/2= 21/20= 1 1/20= 1,05
Б) 10:5/4= 10*4/5= 2*4=8
В) 12/5*12/5= 144/25= 5,76