Страница 34, ГДЗ по математике за 1-4 класс к контрольным работам Волковой. Школа России

1) \[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{4}}4 \\ \smash{\raisebox{0.62em}{$+$}} & 29 \\ \hline & \textcolor{#e03131}{\mathbf{7}\kern-0.075em\mathbf{3}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{5}}1 \\ \smash{\raisebox{0.62em}{$-$}} & 26 \\ \hline & \textcolor{#e03131}{\mathbf{2}\kern-0.075em\mathbf{5}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{8}}0 \\ \smash{\raisebox{0.62em}{$-$}} & 67 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{3}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{7}}2 \\ \smash{\raisebox{0.62em}{$+$}} & 28 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array}\] 2) \[\begin{aligned} 6 \cdot 8 &= \textcolor{#e03131}{\mathbf{48}} & \quad 4 \cdot 9 &= \textcolor{#e03131}{\mathbf{36}} & \quad 7 \cdot 4 &= \textcolor{#e03131}{\mathbf{28}} & \quad 8 \cdot 5 &= \textcolor{#e03131}{\mathbf{40}} \\ 4 \cdot 5 &= \textcolor{#e03131}{\mathbf{20}} & \quad 4 \cdot 8 &= \textcolor{#e03131}{\mathbf{32}} & \quad 9 \cdot 5 &= \textcolor{#e03131}{\mathbf{45}} & \quad 7 \cdot 6 &= \textcolor{#e03131}{\mathbf{42}} \\ 21 : 3 &= \textcolor{#e03131}{\mathbf{7}} & \quad 49 : 7 &= \textcolor{#e03131}{\mathbf{7}} & \quad 35 : 5 &= \textcolor{#e03131}{\mathbf{7}} & \quad 24 : 6 &= \textcolor{#e03131}{\mathbf{4}} \end{aligned}\]

\[47 \overset{\textcolor{#1a7f37}{2}}{+} (100 \overset{\textcolor{#1a7f37}{1}}{-} 89) = \textcolor{#e03131}{\mathbf{58}}\] \[\begin{array}{l} \textcolor{#1a7f37}{\mathbf{1)}} \\ \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{1}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{0}}0 \\ \smash{\raisebox{0.62em}{$-$}} & 89 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{1}\kern-0.075em} \end{array} \end{array}\] \[11 \overset{\textcolor{#1a7f37}{3}}{+} (86 \overset{\textcolor{#1a7f37}{1}}{-} 50) \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} 4 = \textcolor{#e03131}{\mathbf{20}}\]

\[\begin{aligned} \overset{\textcolor{#808080}{\scriptstyle 100\text{ см}}}{10\text{ дм}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 10\text{ см} & \qquad \overset{\textcolor{#808080}{\scriptstyle 20\text{ мм}}}{2\text{ см}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 20\text{ мм} & \qquad 63\text{ см} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 36\text{ см}}}{3\text{ дм }6\text{ см}} \end{aligned}\]

\[3, 6, 9, 12, \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{15}}\kern0.035em}, \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{18}}\kern0.035em}, \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{21}}\kern0.035em}.\] \(\textcolor{#808080}{\text{Каждое следующее число}}\) \(\textcolor{#808080}{\text{на 3 больше предыдущего.}}\)

\[{\hspace{0.1em}\mathrlap{\textcolor{#e03131}{\raisebox{-0.045em}{\rule{5.09em}{0.09em}}}}\mathrlap{\textcolor{#e03131}{\raisebox{2.955em}{\rule{5.09em}{0.09em}}}}\mathrlap{\textcolor{#e03131}{\raisebox{-0.045em}{\rule{0.09em}{3.09em}}}}\hspace{5em}\mathrlap{\textcolor{#e03131}{\raisebox{-0.045em}{\rule{0.09em}{3.09em}}}}\hspace{-2.455em}\textcolor{#e03131}{\mathclap{\raisebox{3.265em}{\textbf{5 см}}}}\hspace{2.895em}\textcolor{#e03131}{\mathrlap{\raisebox{1.2em}{\textbf{3 см}}}}\hspace{2.454em}}\] \(P = 5 + 3 + 5 + 3 = \textcolor{#e03131}{\mathbf{16}}\text{ (см)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{16}}\) см.

\[{\def\arraystretch{1.6}\begin{array}{ll} \textcolor{#e03131}{\underline{\boldsymbol{28 : \square < 5}\vphantom{(}}} & \qquad \square \cdot 5 > 40 \\ \textcolor{#e03131}{\underline{\boldsymbol{21 : \square > 2}\vphantom{(}}} & \qquad \textcolor{#e03131}{\underline{\boldsymbol{49 = 7 \cdot \square}\vphantom{(}}} \end{array}}\]

1) \[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{2}}7 \\ \smash{\raisebox{0.62em}{$+$}} & 36 \\ \hline & \textcolor{#e03131}{\mathbf{6}\kern-0.075em\mathbf{3}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{8}}3 \\ \smash{\raisebox{0.62em}{$-$}} & 47 \\ \hline & \textcolor{#e03131}{\mathbf{3}\kern-0.075em\mathbf{6}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{3}}3 \\ \smash{\raisebox{0.62em}{$+$}} & 67 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{9}}0 \\ \smash{\raisebox{0.62em}{$-$}} & 54 \\ \hline & \textcolor{#e03131}{\mathbf{3}\kern-0.075em\mathbf{6}\kern-0.075em} \end{array}\] 2) \[\begin{aligned} 4 \cdot 8 &= \textcolor{#e03131}{\mathbf{32}} & \quad 6 \cdot 5 &= \textcolor{#e03131}{\mathbf{30}} & \quad 7 \cdot 7 &= \textcolor{#e03131}{\mathbf{49}} & \quad 8 \cdot 5 &= \textcolor{#e03131}{\mathbf{40}} \\ 9 \cdot 3 &= \textcolor{#e03131}{\mathbf{27}} & \quad 5 \cdot 9 &= \textcolor{#e03131}{\mathbf{45}} & \quad 8 \cdot 2 &= \textcolor{#e03131}{\mathbf{16}} & \quad 6 \cdot 7 &= \textcolor{#e03131}{\mathbf{42}} \\ 21 : 3 &= \textcolor{#e03131}{\mathbf{7}} & \quad 49 : 7 &= \textcolor{#e03131}{\mathbf{7}} & \quad 35 : 5 &= \textcolor{#e03131}{\mathbf{7}} & \quad 24 : 6 &= \textcolor{#e03131}{\mathbf{4}} \end{aligned}\]