Страница 23, ГДЗ по математике за 2 класс к проверочным работам Волковой. Серия "Школа России" к УМК Моро
Сложение и вычитание. Проверочная работа 4. Вариант 2
\[\begin{aligned} 18 - 9 - 7 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} & \qquad 12 - (4 + 6) &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} \\ 14 - 5 + 6 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em} & \qquad 11 - (12 - 5) &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} \end{aligned}\]
\[\begin{aligned} 5 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 13 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 4}}}{-} 9 & \qquad 4 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 11}}}{+} 7 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 11 & \qquad 14\text{ мин} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 41\text{ мин} \\ 9 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 18 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 9}}}{-} 9 & \qquad 6 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 14}}}{+} 8 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 15 & \qquad \overset{\textcolor{#808080}{\scriptstyle 60\text{ мин}}}{1\text{ ч}} &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 59\text{ мин} \end{aligned}\]
\[\underset{\textstyle\rule[-0.4em]{0pt}{1.4em}\textcolor{#808080}{\text{правильная запись}}}{\fcolorbox{#e03131}{#ffe3e3}{$10 - 3 - 4 = \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}$}} \qquad \boxed{10 + 4 - 3 = \boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}} \qquad \boxed{10 + 3 - 4 = \boxed{\kern0.035em\phantom{\mathbf{0}}\kern0.035em}}\]
\[35 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 30}}}{-} 5 < 31 \mathbin{\overset{\mathclap{\textcolor{#808080}{\scriptstyle 32}}}{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}}} 1\]
Сложение и вычитание. Проверочная работа 5. Вариант 2
\[\begin{aligned} 9 + 2 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} & \quad 5 + 8 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} & \quad 13 - 7 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} & \quad 17 - 9 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} \\ 6 + 8 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} & \quad 9 + 7 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} & \quad 15 - 8 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} & \quad 11 - 5 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} \\ 4 + 7 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em} & \quad 6 + 6 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} & \quad 12 - 9 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} & \quad 14 - 7 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} \\ 8 + 8 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} & \quad 9 + 4 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} & \quad 16 - 7 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} & \quad 18 - 9 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} \end{aligned}\]