Страница 25, 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 3
\[\begin{aligned} 6 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 14}}}{+} 8 &= 10 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} & \qquad 11 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 4}}}{-} 7 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{13}}\kern0.035em} - 9 & \qquad 8 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 13}}}{+} 5 &= 7 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} \end{aligned}\]
\[\begin{aligned} 28 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 34}}}{+} 6 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 27 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 32}}}{+} 5 & \qquad \overset{\textcolor{#808080}{\scriptstyle 41\text{ дм}}}{4\text{ м }1\text{ дм}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 40\text{ дм} \\ 83 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 78}}}{-} 5 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 85 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 82}}}{-} 3 & \qquad \overset{\textcolor{#808080}{\scriptstyle 69\text{ мм}}}{6\text{ см }9\text{ мм}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 96\text{ мм}}}{9\text{ см }6\text{ мм}} \end{aligned}\]
\(P = 5 + 7 + 8 = \textcolor{#e03131}{\mathbf{20}}\text{ (см)}\)
\(20\text{ см} = \textcolor{#e03131}{\mathbf{2}}\text{ дм}\)
Ответ: \(\textcolor{#e03131}{\mathbf{2}}\) дм.
\(1)\ 6 + 7 = \textcolor{#e03131}{\mathbf{13}}\text{ (т.)}\)
\(2)\ 13 - 5 = \textcolor{#e03131}{\mathbf{8}}\text{ (т.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{8}}\) тетрадей.
2 класс. Контрольная работа по теме «Числа от 1 до 100. Сложение и вычитание». Вариант 4
\[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{8}}2 \\ \smash{\raisebox{0.62em}{$-$}} & 45 \\ \hline & \textcolor{#e03131}{\mathbf{3}\kern-0.075em\mathbf{7}\kern-0.075em} \end{array} \qquad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{2}}7 \\ \smash{\raisebox{0.62em}{$+$}} & 66 \\ \hline & \textcolor{#e03131}{\mathbf{9}\kern-0.075em\mathbf{3}\kern-0.075em} \end{array}\] \[\begin{aligned} 90 - (14 - 6) &= \textcolor{#e03131}{\mathbf{82}} \\ 62 + (53 - 23) &= \textcolor{#e03131}{\mathbf{92}} \end{aligned}\]
\[\begin{aligned} 3 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 12}}}{+} 9 &= 10 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} & \qquad 16 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 7}}}{-} 9 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{11}}\kern0.035em} - 4 & \qquad 3 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 11}}}{+} 8 &= 6 + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} \end{aligned}\]
\[\begin{aligned} 43 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 47}}}{+} 4 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 45 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 48}}}{+} 3 & \qquad \overset{\textcolor{#808080}{\scriptstyle 83\text{ см}}}{8\text{ дм }3\text{ см}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 90\text{ см} \\ 62 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 55}}}{-} 7 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 67 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 65}}}{-} 2 & \qquad \overset{\textcolor{#808080}{\scriptstyle 31\text{ мм}}}{3\text{ см }1\text{ мм}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 29\text{ мм} \end{aligned}\]
\(P = 6 + 8 + 10 = \textcolor{#e03131}{\mathbf{24}}\text{ (см)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{24}}\) см.
\(1)\ 9 + 7 = \textcolor{#e03131}{\mathbf{16}}\text{ (о.)}\)
\(2)\ 16 - 6 = \textcolor{#e03131}{\mathbf{10}}\text{ (о.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{10}}\) орехов.