Ответ:
62×12 = 62×(10+2) = 620+124 = 744.
56×31 = 56×(30+1) = 1680+56 = 1736.
73×22 = 73×(20+2) = 1460+146 = 1606.
83×48 = 83×(50−2) = 4150−166 = 3984.
62×12 = 62×(10+2) = 620+124 = 744.
56×31 = 56×(30+1) = 1680+56 = 1736.
73×22 = 73×(20+2) = 1460+146 = 1606.
83×48 = 83×(50−2) = 4150−166 = 3984.