\[\boxed{\mathbf{Контрольные\ задания}\mathbf{.}}\]
\[\boxed{\mathbf{Вариант\ 1}\mathbf{.}}\]
\[\boxed{\mathbf{1}\mathbf{.}}\]
\[\boxed{\mathbf{2}\mathbf{.}}\]
\[70 + 6 = 76\]
\[76 - 6 = 70\]
\[76 - 70 = 6\]
\[70 + 10 + 10 = 80 + 10 = 90\]
\[60 - 10 - 10 = 50 - 10 = 40\]
\[\boxed{\mathbf{3}\mathbf{.}}\]
\[60,\ 61,\ 62\]
\[79,\ 80,\ 81\]
\[\boxed{\mathbf{4}\mathbf{.}}\]
\[\boxed{\mathbf{5}\mathbf{.}}\]
\[84 > 83\]
\[99 < 100\]
\[75 > 57\]
\[\boxed{\mathbf{6}\mathbf{.}}\]
\[63 + 1 = 64\]
\[85 + 10 = 95\]
\[72 - 1 = 71\]
\[94 - 10 = 84\]
\[\boxed{\mathbf{7}\mathbf{.}}\]
\[(65 + 10) - 1 = 75 - 1 =\]
\[= 74\ (рубля) - было\ у\ Миши.\]
\[Ответ:74\ рубля.\]
\[\boxed{\mathbf{Вариант\ 2}\mathbf{.}}\]
\[\boxed{\mathbf{1}\mathbf{.}}\]
\[\boxed{\mathbf{2}\mathbf{.}}\]
\[20 + 5 = 25\]
\[25 - 5 = 20\]
\[25 - 20 = 5\]
\[50 + 10 = 60\]
\[40 - 10 = 30\]
\[\boxed{\mathbf{3}\mathbf{.}}\]
\[34,\ 35;\]
\[50,\ 49.\]
\[\boxed{\mathbf{4}\mathbf{.}}\]
\[\boxed{\mathbf{5}\mathbf{.}}\]
\[50 < 60\]
\[70 > 7\]
\[41 > 40\]
\[\boxed{\mathbf{6}\mathbf{.}}\]
\[35 + 1 = 36\]
\[35 + 10 = 45\]
\[35 - 1 = 34\]
\[35 - 10 = 25\]
\[\boxed{\mathbf{7}\mathbf{.}}\]
\[(50 - 10) + 2 = 40 + 2 =\]
\[= 42\ (рубля) - у\ Вани.\]
\[Ответ:42\ рубля.\]