Страница 61, ГДЗ по математике за 1-4 класс к контрольным работам Волковой. Школа России
4 класс. Итоговая контрольная работа за I четверть. Вариант 2
\[\begin{aligned} &\begin{aligned} 1) & & 899\,989 + 1 &= \textcolor{#e03131}{\mathbf{899\,990}} & \qquad 45\,283 - 40\,000 &= \textcolor{#e03131}{\mathbf{5\,283}} \\ & & 100\,000 - 1 &= \textcolor{#e03131}{\mathbf{99\,999}} & \qquad 23\,876 + 2\,000 &= \textcolor{#e03131}{\mathbf{25\,876}} \\ & & 8\,100 : 100 &= \textcolor{#e03131}{\mathbf{81}} \\ & & 4\,718 \cdot 10 &= \textcolor{#e03131}{\mathbf{47\,180}} \end{aligned} \\[10pt] &\begin{aligned} 2) & & 640 \overset{\textcolor{#1a7f37}{2}}{-} (270 \overset{\textcolor{#1a7f37}{1}}{+} 70) &= \textcolor{#e03131}{\mathbf{300}} & \qquad (456 \overset{\textcolor{#1a7f37}{2}}{-} 7 \mathbin{\overset{\textcolor{#1a7f37}{1}}{\vphantom{+}\cdot}} 8) \mathrel{\overset{\textcolor{#1a7f37}{3}}{\vphantom{+}{:}}} 10 &= \textcolor{#e03131}{\mathbf{40}} \end{aligned} \end{aligned}\]
\[\begin{aligned} 8\text{ км} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8\,000}}\kern0.035em}\text{ м} & \qquad 200\text{ мм}^2 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\text{ см}^2 \\ 7\text{ м }8\text{ см} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{708}}\kern0.035em}\text{ см} & \qquad 1\text{ км}^2 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1\,000\,000}}\kern0.035em}\text{ м}^2 \\ 7\,000\text{ кг} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\text{ т} \\ 300\text{ с} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\text{ мин} \end{aligned}\]
\(1)\ 48 : 3 = \textcolor{#e03131}{\mathbf{16}}\text{ (б.)}\)
\(2)\ 48 - 16 = \textcolor{#e03131}{\mathbf{32}}\text{ (б.)}\)
Ответ: на \(\textcolor{#e03131}{\mathbf{32}}\) булочки.
\[\textcolor{#e03131}{\boldsymbol{7 \cdot 1 = 7}}\] \(\textcolor{#808080}{\text{Подходят и другие}}\) \(\textcolor{#808080}{\text{равенства с множителем}}\) \(\textcolor{#808080}{\text{1 или 0, например}}\) \(\textcolor{#808080}{{{1 \cdot 9 = 9}}\text{, }{{5 \cdot 0 = 0}}\text{.}}\)
4 класс. Итоговая контрольная работа за I четверть. Вариант 3
\[\textcolor{#e03131}{\mathbf{30\,000}} + 3 = \textcolor{#e03131}{\mathbf{30\,003}}\] \(\textcolor{#808080}{\text{Подходит и любое}}\) \(\textcolor{#808080}{\text{число от }{30\,001}}\) \(\textcolor{#808080}{\text{до }{30\,999}\text{.}}\)
\[\begin{aligned} &\begin{aligned} 1) & & 143\,806 - 43\,800 &= \textcolor{#e03131}{\mathbf{100\,006}} & \qquad 99\,389 + 1 &= \textcolor{#e03131}{\mathbf{99\,390}} \\ & & 29\,730 + 1\,000 &= \textcolor{#e03131}{\mathbf{30\,730}} & \qquad 100\,000 - 1 &= \textcolor{#e03131}{\mathbf{99\,999}} \\ & & 541 \cdot 100 &= \textcolor{#e03131}{\mathbf{54\,100}} \\ & & 3\,700 : 10 &= \textcolor{#e03131}{\mathbf{370}} \end{aligned} \\[10pt] &\begin{aligned} 2) & & 860 \overset{\textcolor{#1a7f37}{2}}{-} (110 \overset{\textcolor{#1a7f37}{1}}{-} 80) &= \textcolor{#e03131}{\mathbf{830}} & \qquad (204 \mathbin{\overset{\textcolor{#1a7f37}{1}}{\vphantom{+}\cdot}} 3 \overset{\textcolor{#1a7f37}{2}}{+} 388) \mathrel{\overset{\textcolor{#1a7f37}{3}}{\vphantom{+}{:}}} 100 &= \textcolor{#e03131}{\mathbf{10}} \end{aligned} \end{aligned}\]
\[\begin{aligned} 30\,000\text{ м} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{30}}\kern0.035em}\text{ км} & \qquad 8\text{ дм}^2 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{800}}\kern0.035em}\text{ см}^2 \\ 60\text{ см} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{600}}\kern0.035em}\text{ мм} & \qquad 5\text{ м}^2 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{500}}\kern0.035em}\text{ дм}^2 \\ 500\text{ кг} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\text{ ц} \\ 180\text{ с} &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\text{ мин} \end{aligned}\]
\(1)\ 36 : 4 = \textcolor{#e03131}{\mathbf{9}}\text{ (л.)}\)
\(2)\ 36 - 9 = \textcolor{#e03131}{\mathbf{27}}\text{ (л.)}\)
Ответ: на \(\textcolor{#e03131}{\mathbf{27}}\) лет.
\[\textcolor{#e03131}{\boldsymbol{9 : 3 = 3}}\] \(\textcolor{#808080}{\text{Подходят и другие}}\) \(\textcolor{#808080}{\text{равенства, где делитель,}}\) \(\textcolor{#808080}{\text{умноженный сам на}}\) \(\textcolor{#808080}{\text{себя, даёт делимое,}}\) \(\textcolor{#808080}{\text{например }{{4 : 2 = 2}}\text{, }{{16 : 4 = 4}}\text{.}}\)
4 класс. Итоговая контрольная работа за I четверть. Вариант 4
\[\textcolor{#e03131}{\mathbf{701\,000}} - 2 = \textcolor{#e03131}{\mathbf{700\,998}}\] \(\textcolor{#808080}{\text{Подходит и любое}}\) \(\textcolor{#808080}{\text{число от }{701\,001}}\) \(\textcolor{#808080}{\text{до }{701\,999}\text{.}}\)
\[\begin{aligned} &\begin{aligned} 1) & & 399\,999 + 1 &= \textcolor{#e03131}{\mathbf{400\,000}} & \qquad 75\,836 - 70\,000 &= \textcolor{#e03131}{\mathbf{5\,836}} \\ & & 200\,000 - 1 &= \textcolor{#e03131}{\mathbf{199\,999}} & \qquad 41\,763 + 2\,000 &= \textcolor{#e03131}{\mathbf{43\,763}} \\ & & 6\,400 : 100 &= \textcolor{#e03131}{\mathbf{64}} \\ & & 5\,183 \cdot 10 &= \textcolor{#e03131}{\mathbf{51\,830}} \end{aligned} \\[10pt] &\begin{aligned} 2) & & 570 \overset{\textcolor{#1a7f37}{2}}{-} (190 \overset{\textcolor{#1a7f37}{1}}{+} 80) &= \textcolor{#e03131}{\mathbf{300}} & \qquad (581 \overset{\textcolor{#1a7f37}{2}}{-} 9 \mathbin{\overset{\textcolor{#1a7f37}{1}}{\vphantom{+}\cdot}} 9) \mathrel{\overset{\textcolor{#1a7f37}{3}}{\vphantom{+}{:}}} 100 &= \textcolor{#e03131}{\mathbf{5}} \end{aligned} \end{aligned}\]
