Страница 18, 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 1
\[\begin{aligned} &\begin{aligned} 1) & & 38 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 30 - 8 &= 0 \end{aligned} \\[10pt] &\begin{aligned} 2) & & 58 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 1 - 50 &= 9 \end{aligned} \end{aligned}\]
2 класс. Контрольная работа по теме «Числа от 1 до 100. Нумерация». Вариант 2
1) \(\textcolor{#e03131}{\mathbf{47}}\textcolor{#e03131}{\mathbf{,}}\ \textcolor{#e03131}{\mathbf{74}}\textcolor{#e03131}{\mathbf{,}}\ \textcolor{#e03131}{\mathbf{70}}\)
2) \(53, 52, 51, \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{50}}\kern0.035em}, \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{49}}\kern0.035em}, 48.\)
\[\begin{aligned} 8 + 40 &= \textcolor{#e03131}{\mathbf{48}} & \qquad 97 - 90 &= \textcolor{#e03131}{\mathbf{7}} & \qquad 59 + 1 &= \textcolor{#e03131}{\mathbf{60}} \\ 39 + 1 &= \textcolor{#e03131}{\mathbf{40}} & \qquad 83 - 1 &= \textcolor{#e03131}{\mathbf{82}} & \qquad 64 - 4 &= \textcolor{#e03131}{\mathbf{60}} \end{aligned}\]
\[\begin{aligned} 97 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 79 & \qquad 69 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 70 & \qquad \overset{\textcolor{#808080}{\scriptstyle 30\text{ дм}}}{3\text{ м}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 22\text{ дм} \end{aligned}\]
\(7 - 5 = \textcolor{#e03131}{\mathbf{2}}\text{ (р.)}\)
Ответ: на \(\textcolor{#e03131}{\mathbf{2}}\) рыбки меньше.
\(\textcolor{#808080}{\text{1 дм = 10 см}}\)
\(10 - 2 = \textcolor{#e03131}{\mathbf{8}}\text{ (см)}\)
\[\begin{array}{l} {\mathrlap{\textcolor{#e03131}{\raisebox{0.305em}{\rule{10.09em}{0.09em}}}}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{10em}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{0.09em}}\hspace{0.6em}\textcolor{#e03131}{\textbf{1 дм}} \\[8pt] {\mathrlap{\textcolor{#e03131}{\raisebox{0.305em}{\rule{8.09em}{0.09em}}}}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{8em}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{0.09em}}\hspace{0.6em}\textcolor{#e03131}{\textbf{8 см}} \end{array}\]
\[\begin{aligned} &\begin{aligned} 1) & & 75 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 1 - 40 &= 36 \end{aligned} \\[10pt] &\begin{aligned} 2) & & 49 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 9 - 40 &= 0 \end{aligned} \end{aligned}\]
2 класс. Контрольная работа по теме «Числа от 1 до 100. Нумерация». Вариант 3
1) \(\textcolor{#e03131}{\mathbf{69}}\textcolor{#e03131}{\mathbf{,}}\ \textcolor{#e03131}{\mathbf{48}}\textcolor{#e03131}{\mathbf{,}}\ \textcolor{#e03131}{\mathbf{90}}\)
2) \(43, 42, 41, \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{40}}\kern0.035em}, \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{39}}\kern0.035em}, 38.\)
\[\begin{aligned} 70 + 3 &= \textcolor{#e03131}{\mathbf{73}} & \qquad 29 + 1 &= \textcolor{#e03131}{\mathbf{30}} & \qquad 48 - 40 &= \textcolor{#e03131}{\mathbf{8}} \\ 90 + 8 &= \textcolor{#e03131}{\mathbf{98}} & \qquad 56 - 6 &= \textcolor{#e03131}{\mathbf{50}} & \qquad 60 - 1 &= \textcolor{#e03131}{\mathbf{59}} \end{aligned}\]
\[\begin{aligned} 67 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 76 & \qquad 54 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 40 & \qquad \overset{\textcolor{#808080}{\scriptstyle 70\text{ мм}}}{7\text{ см}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 70\text{ мм} \end{aligned}\]
\(12 - 10 = \textcolor{#e03131}{\mathbf{2}}\text{ (к.)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{2}}\) костюма.
\(\textcolor{#808080}{\text{1 дм = 10 см}}\)
\(10 - 6 = \textcolor{#e03131}{\mathbf{4}}\text{ (см)}\)
\[\begin{array}{l} {\mathrlap{\textcolor{#e03131}{\raisebox{0.305em}{\rule{10.09em}{0.09em}}}}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{10em}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{0.09em}}\hspace{0.6em}\textcolor{#e03131}{\textbf{1 дм}} \\[8pt] {\mathrlap{\textcolor{#e03131}{\raisebox{0.305em}{\rule{4.09em}{0.09em}}}}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{4em}\mathrlap{\textcolor{#e03131}{\raisebox{0em}{\rule{0.09em}{0.7em}}}}\hspace{0.09em}}\hspace{0.6em}\textcolor{#e03131}{\textbf{4 см}} \end{array}\]
\[\begin{aligned} &\begin{aligned} 1) & & 49 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 1 - 10 &= 40 \end{aligned} \\[10pt] &\begin{aligned} 2) & & 73 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 3 - 70 &= 0 \end{aligned} \end{aligned}\]