\[\boxed{\mathbf{Проверочная\ работа.\ \ Степень\ с\ натуральным\ показателем}}\]
\[\boxed{\mathbf{1.}}\]
\[11 + 7^{2} = 11 + 49 = 60\]
\[\boxed{\mathbf{2.}}\]
\[50 - 3^{3} = 50 - 27 = 23\]
\[\boxed{\mathbf{3.}}\]
\[9^{2} + 2^{3} = 81 + 8 = 89\]
\[\boxed{\mathbf{4.}}\]
\[10^{2} \cdot 8^{2} = 100 \cdot 64 = 6400\]
\[\boxed{\mathbf{5.}}\]
\[5^{2} - 4^{2} = 25 - 16 = 9\]
\[\boxed{\mathbf{6.}}\]
\[(17 - 15)^{3} = 2^{3} = 8\]
\[\boxed{\mathbf{7.}}\]
\[\mathbf{Да.}\]
\[\boxed{\mathbf{8.}}\]
\[\mathbf{Нет.}\]
\[15^{3} = 15 \cdot 15 \cdot 15.\]