Часть 1 страница 76, ГДЗ по математике за 2 класс к рабочей тетради Моро
87 + 13
Складываю \(\textcolor{#e03131}{\textbf{единицы: }{\boldsymbol{7 + 3 = 10}}\textbf{, 0 пишу,}}\) \(\textcolor{#e03131}{\textbf{1 десяток запоминаю.}}\)
Складываю \(\textcolor{#e03131}{\textbf{десятки: }{\boldsymbol{8 + 1 = 9}}\textbf{, да}}\) \(\textcolor{#e03131}{\textbf{ещё 1 — 10 десятков,}}\) \(\textcolor{#e03131}{\textbf{пишу 10.}}\)
Читаю \(\textcolor{#e03131}{\textbf{ответ: сумма равна}}\) \(\textcolor{#e03131}{\textbf{100.}}\)
\[\begin{aligned} 42 + 5 &= \textcolor{#e03131}{\mathbf{47}} & \qquad 87 - 6 &= \textcolor{#e03131}{\mathbf{81}} & \qquad 15 - \textcolor{#e03131}{\mathbf{5}} + 6 &= 16 \\ 34 + 3 &= \textcolor{#e03131}{\mathbf{37}} & \qquad 59 - 4 &= \textcolor{#e03131}{\mathbf{55}} & \qquad 23 - \textcolor{#e03131}{\mathbf{20}} + 8 &= 11 \\ 62 + 8 &= \textcolor{#e03131}{\mathbf{70}} & \qquad 90 - 7 &= \textcolor{#e03131}{\mathbf{83}} & \qquad 36 - \textcolor{#e03131}{\mathbf{30}} + 9 &= 15 \end{aligned}\]
\[\begin{aligned} 11 \mathbin{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}} 7 \mathbin{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}} 8 &= 12 & \qquad 50 \mathbin{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}} 35 \mathbin{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}} 10 &= 75 \\ 16 \mathbin{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}} 8 \mathbin{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}} 7 &= 15 & \qquad 75 \mathbin{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}} 20 \mathbin{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}} 40 &= 95 \\ 8 \mathbin{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}} 9 \mathbin{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}} 10 &= 7 & \qquad 80 \mathbin{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}} 50 \mathbin{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}} 30 &= 0 \end{aligned}\] \(\textcolor{#808080}{\text{Подходят и }{16 - (8 - 7) = 15}\text{,}}\) \(\textcolor{#808080}{{80 - (50 + 30) = 0}\text{.}}\)
\[\begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{6}}6 \\ \smash{\raisebox{0.62em}{$+$}} & 14 \\ \hline & \textcolor{#e03131}{\mathbf{8}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array} \quad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{4}}2 \\ \smash{\raisebox{0.62em}{$+$}} & 58 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array} \quad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{1}}9 \\ \smash{\raisebox{0.62em}{$+$}} & 81 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array} \quad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{3}}7 \\ \smash{\raisebox{0.62em}{$+$}} & 33 \\ \hline & \textcolor{#e03131}{\mathbf{7}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array} \quad \begin{array}{cr} & \vphantom{\overset{\bullet}{0}}\overset{\textcolor{#1c7ed6}{\bullet}}{\textcolor{#1c7ed6}{7}}5 \\ \smash{\raisebox{0.62em}{$+$}} & 25 \\ \hline & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{0}\kern-0.075em\mathbf{0}\kern-0.075em} \end{array}\]
