Страница 24, ГДЗ по математике за 1-4 класс к контрольным работам Волковой. Школа России
2 класс. Контрольная работа по теме «Числа от 1 до 100. Сложение и вычитание». Вариант 1
\[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{8}}2 \\ \smash{\raisebox{0.62em}{$-$}} & 46 \\ \hline & \textcolor{#e03131}{\mathbf{3}\kern-0.075em\mathbf{6}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{3}}9 \\ \smash{\raisebox{0.62em}{$+$}} & 25 \\ \hline & \textcolor{#e03131}{\mathbf{6}\kern-0.075em\mathbf{4}\kern-0.075em} \end{array}\] \[\begin{aligned} 80 - (6 + 8) &= \textcolor{#e03131}{\mathbf{66}} \\ 36 + (42 - 22) &= \textcolor{#e03131}{\mathbf{56}} \end{aligned}\]
\[\begin{aligned} 9 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} &= 4 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 14}}}{+} 10 & \qquad 17 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 8}}}{-} 9 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{15}}\kern0.035em} - 7 & \qquad 6 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 11}}}{+} 5 &= 3 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} \end{aligned}\]
\[\begin{aligned} 36 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 45}}}{+} 9 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 37 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 45}}}{+} 8 & \qquad \overset{\textcolor{#808080}{\scriptstyle 32\text{ см}}}{3\text{ дм }2\text{ см}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 23\text{ см} \\ 87 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 83}}}{-} 4 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 84 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 77}}}{-} 7 & \qquad \overset{\textcolor{#808080}{\scriptstyle 78\text{ мм}}}{7\text{ см }8\text{ мм}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 87\text{ мм}}}{8\text{ см }7\text{ мм}} \end{aligned}\]
\(P = 8 + 4 + 10 = \textcolor{#e03131}{\mathbf{22}}\text{ (см)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{22}}\) см.
\(1)\ 15 + 30 = \textcolor{#e03131}{\mathbf{45}}\text{ (зн.)}\)
\(2)\ 45 - 20 = \textcolor{#e03131}{\mathbf{25}}\text{ (зн.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{25}}\) значков.
2 класс. Контрольная работа по теме «Числа от 1 до 100. Сложение и вычитание». Вариант 2
\[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{8}}1 \\ \smash{\raisebox{0.62em}{$-$}} & 24 \\ \hline & \textcolor{#e03131}{\mathbf{5}\kern-0.075em\mathbf{7}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{4}}8 \\ \smash{\raisebox{0.62em}{$+$}} & 17 \\ \hline & \textcolor{#e03131}{\mathbf{6}\kern-0.075em\mathbf{5}\kern-0.075em} \end{array}\] \[\begin{aligned} 70 - (4 + 9) &= \textcolor{#e03131}{\mathbf{57}} \\ 62 + (54 - 34) &= \textcolor{#e03131}{\mathbf{82}} \end{aligned}\]
\[\begin{aligned} 8 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} &= 7 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 14}}}{+} 7 & \qquad 16 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 7}}}{-} 9 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{11}}\kern0.035em} - 4 & \qquad 6 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} &= 8 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 13}}}{+} 5 \end{aligned}\]
\[\begin{aligned} 47 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 52}}}{+} 5 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 48 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 52}}}{+} 4 & \qquad \overset{\textcolor{#808080}{\scriptstyle 71\text{ мм}}}{7\text{ см }1\text{ мм}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 17\text{ мм}}}{1\text{ см }7\text{ мм}} \\ 82 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 76}}}{-} 6 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 86 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 84}}}{-} 2 & \qquad \overset{\textcolor{#808080}{\scriptstyle 80\text{ дм}}}{8\text{ м}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 85\text{ дм} \end{aligned}\]
\(P = 6 + 10 + 14 = \textcolor{#e03131}{\mathbf{30}}\text{ (см)}\)
\(30\text{ см} = \textcolor{#e03131}{\mathbf{3}}\text{ дм}\)
Ответ: \(\textcolor{#e03131}{\mathbf{3}}\) дм.
\(1)\ 10 + 6 = \textcolor{#e03131}{\mathbf{16}}\text{ (о.)}\)
\(2)\ 16 - 7 = \textcolor{#e03131}{\mathbf{9}}\text{ (о.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{9}}\) огурцов.
2 класс. Контрольная работа по теме «Числа от 1 до 100. Сложение и вычитание». Вариант 3
\[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{7}}3 \\ \smash{\raisebox{0.62em}{$-$}} & 37 \\ \hline & \textcolor{#e03131}{\mathbf{3}\kern-0.075em\mathbf{6}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{5}}9 \\ \smash{\raisebox{0.62em}{$+$}} & 16 \\ \hline & \textcolor{#e03131}{\mathbf{7}\kern-0.075em\mathbf{5}\kern-0.075em} \end{array}\] \[\begin{aligned} 60 - (9 + 7) &= \textcolor{#e03131}{\mathbf{44}} \\ 53 + (38 - 18) &= \textcolor{#e03131}{\mathbf{73}} \end{aligned}\]