\[\boxed{Страница\ 74.}\]
\[\boxed{\mathbf{1.}}\]
\[1.\]
\[1\ т\ :10 = 1\ ц\ :100 =\]
\[= 1\ кг\ :1000 = 1\ г\]
\[3\ кг\ 200\ г\ :4 = 3200\ г\ :4 =\]
\[= 800\ г.\]
\[2.\]
\[1\ сут.\ :24 = 1\ ч\ :60 =\]
\[= 1\ мин\ :60 = 1\ с.\]
\[2\ ч\ 16\ мин \cdot 5 = 10\ ч\ 80\ мин =\]
\[= 11\ ч\ 20\ мин.\]
\[3.\]
\[1\ км\ :1000 = 1\ м\ :10 =\]
\[= 1\ дм\ :10 = 1\ см\ :10 = 1\ мм.\]
\[18\ м\ 70\ см\ :3\ м\ 35\ см =\]
\[= 1870\ см\ :335\ см =\]
\[= 5\ (ост.\ 195) - скорее\ всего\ \]
\[опечатка\ в\ тетради.\]
\[4.\]
\[1\ км^{2}\ :1\ 000\ 000 = 1\ м^{2}\ :100 =\]
\[= 1\ дм^{2}\ :100 = 1\ см^{2}\ :100 =\]
\[= 1\ мм^{2}.\]
\[7\ м^{2}\ 16\ см^{2}\ :4 =\]
\[= 70\ 016\ см^{2}\ :4 = 17\ 504\ см^{2} =\]
\[= 1\ м^{2}\ 75\ дм^{2}\ 4\ см^{2}\]
\[5.\]
\[1\ км^{3}\ :1\ 000\ 000\ 000 =\]
\[= 1\ м^{3}\ :1000 = 1\ дм^{3}\ :1000 =\]
\[= 1\ см^{3}\ :1000 = 1\ мм^{3}.\]
\[3\ м^{3}\ 45\ см^{3} - 26\ дм^{3}\ 9\ см^{3} =\]
\[= 2974\ дм^{3}\ 36\ см^{3} =\]
\[= 2\ м^{3}\ 974\ дм^{3}\ 36\ см^{3}\ \]