Страница 19, ГДЗ по математике за 1-4 класс к контрольным работам Волковой. Школа России
2 класс. Контрольная работа по теме «Числа от 1 до 100. Нумерация». Вариант 4
1) \(\textcolor{#e03131}{\mathbf{49}}\textcolor{#e03131}{\mathbf{,}}\ \textcolor{#e03131}{\mathbf{96}}\textcolor{#e03131}{\mathbf{,}}\ \textcolor{#e03131}{\mathbf{70}}\)
2) \(67, 68, 69, \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{70}}\kern0.035em}, \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{71}}\kern0.035em}, 72.\)
\[\begin{aligned} 50 + 9 &= \textcolor{#e03131}{\mathbf{59}} & \qquad 49 + 1 &= \textcolor{#e03131}{\mathbf{50}} & \qquad 76 - 70 &= \textcolor{#e03131}{\mathbf{6}} \\ 20 + 4 &= \textcolor{#e03131}{\mathbf{24}} & \qquad 33 - 3 &= \textcolor{#e03131}{\mathbf{30}} & \qquad 80 - 1 &= \textcolor{#e03131}{\mathbf{79}} \end{aligned}\]
\[\begin{aligned} 41 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 24 & \qquad 78 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 87 & \qquad \overset{\textcolor{#808080}{\scriptstyle 40\text{ см}}}{4\text{ дм}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 14\text{ см} \end{aligned}\]
\(8 + 2 = \textcolor{#e03131}{\mathbf{10}}\text{ (д.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{10}}\) девочек.
\(\textcolor{#808080}{\text{1 дм = 10 см}}\)
\(10 + 2 = \textcolor{#e03131}{\mathbf{12}}\text{ (см)}\)
\[\begin{array}{l} {\mathrlap{\textcolor{#e03131}{\raisebox{0.305em}{\rule{10.09em}{0.09em}}}}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{10em}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{0.09em}}\hspace{0.6em}\textcolor{#e03131}{\textbf{1 дм}} \\[8pt] {\mathrlap{\textcolor{#e03131}{\raisebox{0.305em}{\rule{12.09em}{0.09em}}}}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{12em}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{0.09em}}\hspace{0.6em}\textcolor{#e03131}{\textbf{12 см}} \end{array}\]
\[\begin{aligned} &\begin{aligned} 1) & & 84 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 1 - 80 &= 5 \end{aligned} \\[10pt] &\begin{aligned} 2) & & 61 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 1 - 60 &= 0 \end{aligned} \end{aligned}\]
2 класс. Итоговая контрольная работа за I четверть. Вариант 1
\[\begin{aligned} &\begin{aligned} 1) & & 8 + 9 &= \textcolor{#e03131}{\mathbf{17}} & \qquad 4 + 7 &= \textcolor{#e03131}{\mathbf{11}} \\ & & 26 - 6 &= \textcolor{#e03131}{\mathbf{20}} & \qquad 79 + 1 &= \textcolor{#e03131}{\mathbf{80}} \\ & & 11 - 9 &= \textcolor{#e03131}{\mathbf{2}} & \qquad 12 - 7 &= \textcolor{#e03131}{\mathbf{5}} \\ & & 45 - 40 &= \textcolor{#e03131}{\mathbf{5}} & \qquad 90 - 1 &= \textcolor{#e03131}{\mathbf{89}} \end{aligned} \\[10pt] &\begin{aligned} 2) & & 8 + 5 - 9 &= \textcolor{#e03131}{\mathbf{4}} & \quad 13 - 4 + 6 &= \textcolor{#e03131}{\mathbf{15}} & \quad 16 - (12 - 3) &= \textcolor{#e03131}{\mathbf{7}} \end{aligned} \end{aligned}\]
\[\begin{aligned} 5\text{ см} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} \overset{\textcolor{#808080}{\scriptstyle 51\text{ см}}}{5\text{ дм }1\text{ см}} & \qquad \overset{\textcolor{#808080}{\scriptstyle 70\text{ см}}}{7\text{ дм}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 17\text{ см} \end{aligned}\]
\(1)\ 12 - 4 = \textcolor{#e03131}{\mathbf{8}}\text{ (т.)}\)
\(2)\ 8 + 6 = \textcolor{#e03131}{\mathbf{14}}\text{ (т.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{14}}\) телевизоров.