\[\boxed{\mathbf{Вариант\ 2.}}\]
\[\boxed{\mathbf{1.}}\]
\[400\]
\[946\]
\[616\]
\[305\]
\[730\]
\[808\]
\[\boxed{\mathbf{2.}}\]
\[500\]
\[370\]
\[712\]
\[202\]
\[894\]
\[1000\]
\[\boxed{\mathbf{3.}}\]
\[Увеличь\ в\ 100\ раз:\]
\[9 \cdot 100 = 900\]
\[4 \cdot 100 = 400\]
\[8 \cdot 100 = 800\]
\[1 \cdot 100 = 100\]
\[Увеличь\ на\ 100:\]
\[6 + 100 = 106\]
\[12 + 100 = 112\]
\[50 + 100 = 150\]
\[600 + 100 = 700\]
\[\boxed{\mathbf{4.}}\]
\[375,\ 357,\ 537,\ 573,\ 735,\ 753.\]