Решебник по математике 5 класс Виленкин ФГОС Часть 1, 2 Часть 2. Параграф 6. Десятичные дроби Задание 9

\[\boxed{\text{6.9.}}\]

\[\textbf{а)}\ 8^{2}\ :4 = 64\ :4 = 16;\ \]

\[16 + 56 = 72;\ \]

\[72\ :18 = 4;\ \]

\[4 \cdot 25 = 100;\ \]

\[100 - 61 = 39.\ \]

\[\textbf{б)}\ 3^{3} \cdot 2 = 27 \cdot 2 = 54;\ \]

\[54\ :6 = 9;\ \]

\[9 \cdot 7 = 63;\ \]

\[63 + 7 = 70;\ \]

\[70 + 230 = 300.\ \]

\[\textbf{в)}\ 10^{2} \cdot 3 = 100 \cdot 3 = 300;\ \]

\[300\ :150 = 2;\ \]

\[2 \cdot 48 = 96;\ \]

\[96 + 44 = 140;\ \]

\[140\ :7 = 20.\ \]

\[\textbf{г)}\ 4^{3}\ :8 = 64\ :8 = 8;\ \]

\[8 \cdot 9 = 72;\ \]

\[72 + 19 = 91;\ \]

\[91\ :13 = 7;\ \]

\[7 \cdot 120 = 840.\ \]

\[\textbf{д)}\ 5^{2} \cdot 8 = 25 \cdot 8 = 200;\ \]

\[200\ :40 = 5;\ \]

\[5 \cdot 60 = 300;\ \]

\[300 - 120 = 180;\ \]

\[180\ :30 = 6.\ \ \ \]