Страница 48, ГДЗ по математике за 4 класс к тренажёру Конновой
Преобразование и сравнение величин
\[\overset{\textcolor{#808080}{\scriptstyle 90\text{ мин}}}{1\text{ ч }30\text{ мин}} \overset{\kern0.25em\textcolor{#808080}{\scriptstyle 135\text{ мин}}\kern0.25em}{+} 45\text{ мин} = \boxed{\smash[b]{\underset{\hspace{7em}}{\textcolor{#e03131}{\mathbf{2}}\text{ ч }\textcolor{#e03131}{\mathbf{15}}\text{ мин}}}}\] \[\overset{\textcolor{#808080}{\scriptstyle 9\,610\text{ г}}}{9\text{ кг }610\text{ г}} - 800\text{ г} = \boxed{\smash[b]{\underset{\hspace{7em}}{\textcolor{#e03131}{\mathbf{8}}\text{ кг }\textcolor{#e03131}{\mathbf{810}}\text{ г}}}}\] \[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{9}}610 \\ \smash{\raisebox{0.62em}{$-$}} & 800 \\ \hline & \textcolor{#e03131}{\mathbf{8}\kern-0.075em\mathbf{8}\kern-0.075em\mathbf{1}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array}\] \[9\text{ мм} \overset{\kern0.25em\textcolor{#808080}{\scriptstyle 90\text{ мм}}\kern0.25em}{+} \overset{\textcolor{#808080}{\scriptstyle 81\text{ мм}}}{8\text{ см }1\text{ мм}} = \boxed{\smash[b]{\underset{\hspace{7em}}{\textcolor{#e03131}{\mathbf{9}}\text{ см}}}}\] \[\overset{\textcolor{#808080}{\scriptstyle 2\,000\text{ дм}^2}}{20\text{ м}^2} - 10\text{ дм}^2 = \boxed{\smash[b]{\underset{\hspace{7em}}{\textcolor{#e03131}{\mathbf{19}}\text{ м}^2\text{ }\textcolor{#e03131}{\mathbf{90}}\text{ дм}^2}}}\] \[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{2}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{0}}00 \\ \smash{\raisebox{0.62em}{$-$}} & 10 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{9}\kern-0.075em\mathbf{9}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array}\] \[\overset{\textcolor{#808080}{\scriptstyle 11\text{ см}}}{1\text{ дм }1\text{ см}} \overset{\kern0.25em\textcolor{#808080}{\scriptstyle 31\text{ см}}\kern0.25em}{+} 20\text{ см} = \boxed{\smash[b]{\underset{\hspace{7em}}{\textcolor{#e03131}{\mathbf{3}}\text{ дм }\textcolor{#e03131}{\mathbf{1}}\text{ см}}}}\] \[\overset{\textcolor{#808080}{\scriptstyle 123\text{ мин}}}{2\text{ ч }3\text{ мин}} \overset{\kern0.25em\textcolor{#808080}{\scriptstyle 115\text{ мин}}\kern0.25em}{-} 8\text{ мин} = \boxed{\smash[b]{\underset{\hspace{7em}}{\textcolor{#e03131}{\mathbf{1}}\text{ ч }\textcolor{#e03131}{\mathbf{55}}\text{ мин}}}}\] \[\overset{\textcolor{#808080}{\scriptstyle 5\,300\text{ г}}}{5\text{ кг }300\text{ г}} \cdot 4 = \boxed{\smash[b]{\underset{\hspace{7em}}{\textcolor{#e03131}{\mathbf{21}}\text{ кг }\textcolor{#e03131}{\mathbf{200}}\text{ г}}}}\] \[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}5300 \\ \smash{\raisebox{0.62em}{$\times$}} & 4\phantom{00} \\ \hline & \textcolor{#e03131}{\mathbf{2}\kern-0.075em\mathbf{1}\kern-0.075em\mathbf{2}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array}\]
