Виленкин гдз математика 6 класс решебник

Упражнение 1185

Условие:

Вычислите устно:

6L1185z1

 

 

 

 

 

 

 

 

 

 

 

Ответ:

а) 0,6 • 1/3 = 3/5 • 1/3 = 1/5, -2/5 • 1/3 = -2/15, -1 • 1/3 = -1/3, 6/11 • 1/3 = 2/11,
-3/7 • 1/3 = -1/7, -9 • 1/3 = -3, -2 2/5 • 1/3 = -12/5 • 1/3 = -4/5, -3 • 1/3 = -1;

б) 2/3 : 3/5 = 2/3 • 5/3 = 10/9 = 1 1/9, -1 2/3 : 3/5 = -5/3 • 3/5 = -1, 6 : 3/5 = 6 • 5/3 = 10,
-1 1/5 : 3/5 = -6/5 • 5/3 = -2, -3 : 3/5 = -3 • 5/3 = -5, -1/2 : 3/5 = -1/2 • 5/3 = -5/6,
9/11 : 3/5 = 9/11 • 5/3 = 15/11 = 1 4/11, -1 : 3/5 = -5/3 = -1 2/3.

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