Страница 36, ГДЗ по математике за 1-4 класс к контрольным работам Волковой. Школа России
2 класс. Итоговые контрольные работы за второй класс. Контрольная работа 1. Вариант 4
1) \[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{4}}5 \\ \smash{\raisebox{0.62em}{$+$}} & 38 \\ \hline & \textcolor{#e03131}{\mathbf{8}\kern-0.075em\mathbf{3}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{6}}1 \\ \smash{\raisebox{0.62em}{$-$}} & 43 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{8}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{7}}0 \\ \smash{\raisebox{0.62em}{$-$}} & 54 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{6}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{4}}1 \\ \smash{\raisebox{0.62em}{$+$}} & 59 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array}\] 2) \[\begin{aligned} 8 \cdot 4 &= \textcolor{#e03131}{\mathbf{32}} & \quad 6 \cdot 7 &= \textcolor{#e03131}{\mathbf{42}} & \quad 9 \cdot 5 &= \textcolor{#e03131}{\mathbf{45}} & \quad 6 \cdot 4 &= \textcolor{#e03131}{\mathbf{24}} \\ 3 \cdot 6 &= \textcolor{#e03131}{\mathbf{18}} & \quad 9 \cdot 3 &= \textcolor{#e03131}{\mathbf{27}} & \quad 7 \cdot 4 &= \textcolor{#e03131}{\mathbf{28}} & \quad 5 \cdot 5 &= \textcolor{#e03131}{\mathbf{25}} \\ 35 : 7 &= \textcolor{#e03131}{\mathbf{5}} & \quad 48 : 8 &= \textcolor{#e03131}{\mathbf{6}} & \quad 28 : 7 &= \textcolor{#e03131}{\mathbf{4}} & \quad 40 : 8 &= \textcolor{#e03131}{\mathbf{5}} \end{aligned}\]
\[52 \overset{\textcolor{#1a7f37}{2}}{+} (90 \overset{\textcolor{#1a7f37}{1}}{-} 65) = \textcolor{#e03131}{\mathbf{77}}\] \[\begin{array}{l} \textcolor{#1a7f37}{\mathbf{1)}} \\ \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{9}}0 \\ \smash{\raisebox{0.62em}{$-$}} & 65 \\ \hline & \textcolor{#e03131}{\mathbf{2}\kern-0.075em\mathbf{5}\kern-0.075em} \end{array} \end{array}\] \[70 \overset{\textcolor{#1a7f37}{3}}{-} 27 \mathrel{\overset{\textcolor{#1a7f37}{2}}{\vphantom{+}{:}}} (17 \overset{\textcolor{#1a7f37}{1}}{-} 8) = \textcolor{#e03131}{\mathbf{67}}\]
\[\begin{aligned} 50\text{ мм} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 100\text{ мм}}}{10\text{ см}} & \qquad \overset{\textcolor{#808080}{\scriptstyle 40\text{ см}}}{4\text{ дм}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 42\text{ см} & \qquad 9\text{ дм} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 10\text{ дм}}}{1\text{ м}} \end{aligned}\]
\[36, 32, 28, 24, \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{20}}\kern0.035em}, \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{16}}\kern0.035em}, \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{12}}\kern0.035em}.\] \(\textcolor{#808080}{\text{Каждое следующее число}}\) \(\textcolor{#808080}{\text{на 4 меньше предыдущего.}}\)
\[{\hspace{0.1em}\mathrlap{\textcolor{#e03131}{\raisebox{-0.045em}{\rule{8.09em}{0.09em}}}}\mathrlap{\textcolor{#e03131}{\raisebox{3.955em}{\rule{8.09em}{0.09em}}}}\mathrlap{\textcolor{#e03131}{\raisebox{-0.045em}{\rule{0.09em}{4.09em}}}}\hspace{8em}\mathrlap{\textcolor{#e03131}{\raisebox{-0.045em}{\rule{0.09em}{4.09em}}}}\hspace{-3.955em}\textcolor{#e03131}{\mathclap{\raisebox{4.265em}{\textbf{8 см}}}}\hspace{4.395em}\textcolor{#e03131}{\mathrlap{\raisebox{1.7em}{\textbf{4 см}}}}\hspace{2.454em}}\]
\(P = 8 + 4 + 8 + 4 = \textcolor{#e03131}{\mathbf{24}}\text{ (см)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{24}}\) см.
\[{\def\arraystretch{1.6}\begin{array}{ll} 32 : \square < 4 & \qquad \textcolor{#e03131}{\underline{\boldsymbol{\square \cdot 3 > 20}\vphantom{(}}} \\ \textcolor{#e03131}{\underline{\boldsymbol{\square : 2 > 2}\vphantom{(}}} & \qquad 42 = 6 \cdot \square \end{array}}\]
2 класс. Итоговые контрольные работы за второй класс. Контрольная работа 2. Вариант 1
\(24 : 3 = \textcolor{#e03131}{\mathbf{8}}\text{ (к.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{8}}\) коробок.
\(20 : 4 = \textcolor{#e03131}{\mathbf{5}}\text{ (р.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{5}}\) рыбок.
\(12 + 10 = \textcolor{#e03131}{\mathbf{22}}\text{ (р.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{22}}\) работы.
\(1)\ 10 - 2 = \textcolor{#e03131}{\mathbf{8}}\text{ (л.)}\)
\(2)\ 10 + 8 = \textcolor{#e03131}{\mathbf{18}}\text{ (л.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{18}}\) луковиц.
\(1)\ 13 - 10 = \textcolor{#e03131}{\mathbf{3}}\text{ (г.)}\)
\(2)\ 8 - 3 = \textcolor{#e03131}{\mathbf{5}}\text{ (л.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{5}}\) лет.