Решебник по математике 5 класс Ерина. Никольский рабочая тетрадь Часть 1, 2 Часть 1 | Страница 27

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\[\boxed{\mathbf{8.}}\]

\[\textbf{а)}\ 20\ 000 - 908 \cdot 18 + 157 =\]

\[= 20\ 157 - 16\ 344 = 3813\]

\[\textbf{б)}\ 805\ 001 - 65 \cdot (413 - 299) =\]

\[= 797\ 591\]

\[413 - 299 = 114\]

\[\boxed{\mathbf{9.}}\]

\[\textbf{а)}\ (1545 + x)\ :83 = 70\]

\[1545 + x = 70 \cdot 83\]

\[1545 + x = 5810\]

\[x = 5810 - 1545\]

\[x = 4265.\]

\[Ответ:4265.\ \]

\[\textbf{б)}\ x + 337 = 307 \cdot 12\]

\[x + 337 = 3684\]

\[x = 3347.\]

\[Ответ:337.\ \]

\[\boxed{\mathbf{1.}}\]

\[6^{3} = 6 \cdot 6 \cdot 6\]

\[9^{3} = 9 \cdot 9 \cdot 9\]

\[11^{2} = 11 \cdot 11\]

\[13^{4} = 13 \cdot 13 \cdot 13 \cdot 13\]

\[a^{2} = a \cdot a\]

\[x^{5} = x \cdot x \cdot x \cdot x \cdot x\]

\[b^{3} = b \cdot b \cdot b\]

\[y^{6} = y \cdot y \cdot y \cdot y \cdot y \cdot y\]

\[\boxed{\mathbf{2.}}\]

\[\textbf{а)}\ 17 \cdot 17 = 17^{2}\]

\[\textbf{б)}\ 49 \cdot 49 \cdot 49 = 49^{3}\]

\[\textbf{в)}\ a \cdot a = a^{2}\]