Страница 4, ГДЗ по математике за 3 класс к проверочным работам Волковой. Серия "Школа России" к УМК Моро

\[\begin{aligned} 4 + 7 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} & \qquad 16 - 9 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} \\ 9 + 3 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} & \qquad 12 - 5 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} \\ 13 - 4 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} & \qquad 15 - 8 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} \\ 17 - 9 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} & \qquad 13 - 6 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} \\ 8 + 6 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} & \qquad 5 + 9 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} \\ 9 + 7 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} & \qquad 14 - 7 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} \\ 7 + 6 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} & \qquad 3 + 8 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} \\ 11 - 5 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} & \qquad 9 + 4 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} \end{aligned}\]

1) \[\begin{aligned} 18 + 4 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} & \qquad 52 - 9 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} & \qquad 43 - 20 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} \\ 89 - 6 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} & \qquad 30 - 7 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} & \qquad 31 + 40 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} \end{aligned}\] 2) \[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{5}}4 \\ \smash{\raisebox{0.62em}{$+$}} & 36 \\ \hline & \textcolor{#e03131}{\mathbf{9}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}69 \\ \smash{\raisebox{0.62em}{$-$}} & 23 \\ \hline & \textcolor{#e03131}{\mathbf{4}\kern-0.075em\mathbf{6}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{3}}7 \\ \smash{\raisebox{0.62em}{$+$}} & 46 \\ \hline & \textcolor{#e03131}{\mathbf{8}\kern-0.075em\mathbf{3}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{9}}0 \\ \smash{\raisebox{0.62em}{$-$}} & 25 \\ \hline & \textcolor{#e03131}{\mathbf{6}\kern-0.075em\mathbf{5}\kern-0.075em} \end{array}\]

\[\begin{aligned} 78\text{ мм} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\text{ см }\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\text{ мм} & \qquad 5\text{ дм} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\text{ см} \end{aligned}\]

\[\begin{array}{|c|c|c|c|c|} \hline a & 3 & 15 & 20 & 35 \\ \hline 36 - a & \rule[-0.52em]{0pt}{1.66em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} & \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} & \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} & \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} \\ \hline \end{array}\]

Запиши такие пропущенные цифры, чтобы получились верные равенства: \({\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\kern0.1em9 - 5 = 3\kern0.1em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}}\);
\({4\kern0.1em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} + 6 = \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\kern0.1em9}\).