Часть 2 страница 7, ГДЗ по математике за 2 класс к рабочей тетради Моро
Числа от 1 до 100. Сложение и вычитание (продолжение)
\[\begin{array}{rlcrl} 1)\ & x + 14 = 20 + 14 & \qquad & 2)\ & y - 18 = 90 - 18 \\ & x = \textcolor{#e03131}{\mathbf{20}} & & & y = \textcolor{#e03131}{\mathbf{90}} \\[6pt] 3)\ & 56 - x = 56 - 11 & \qquad & 4)\ & x - 28 = 0 \\ & x = \textcolor{#e03131}{\mathbf{11}} & & & x = \textcolor{#e03131}{\mathbf{28}} \end{array}\]
\(3 + 4 = \textcolor{#e03131}{\mathbf{7}}\text{ (л.)}\)
Ответ: на \(\textcolor{#e03131}{\mathbf{7}}\) лет.
\[\begin{array}{|c|c|c|c|c|c|c|c|c|c|} \hline \text{Уменьшаемое} & 50 & \textcolor{#e03131}{\mathbf{2}\kern-0.075em\mathbf{0}\kern-0.075em} & 30 & \textcolor{#e03131}{\mathbf{2}\kern-0.075em\mathbf{7}\kern-0.075em} & 48 & 56 & \textcolor{#e03131}{\mathbf{5}\kern-0.075em\mathbf{3}\kern-0.075em} & 100 & 99 \\ \hline \text{Вычитаемое} & 5 & 6 & \textcolor{#e03131}{\mathbf{2}\kern-0.075em\mathbf{0}\kern-0.075em} & 7 & 8 & \textcolor{#e03131}{\mathbf{1}\kern-0.075em\mathbf{6}\kern-0.075em} & 10 & 80 & 70 \\ \hline \text{Разность} & \textcolor{#e03131}{\mathbf{4}\kern-0.075em\mathbf{5}\kern-0.075em} & 14 & 10 & 20 & \textcolor{#e03131}{\mathbf{4}\kern-0.075em\mathbf{0}\kern-0.075em} & 40 & 43 & \textcolor{#e03131}{\mathbf{2}\kern-0.075em\mathbf{0}\kern-0.075em} & \textcolor{#e03131}{\mathbf{2}\kern-0.075em\mathbf{9}\kern-0.075em} \\ \hline \end{array}\]
\[\begin{aligned} 8 + 7 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 9 &= 6 & \qquad 46 + \textcolor{#e03131}{\mathbf{4}} - 20 &= 30 \\ 12 - \textcolor{#e03131}{\mathbf{3}} \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 5 &= 14 & \qquad 32 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} \textcolor{#e03131}{\mathbf{8}} + 30 &= 70 \\ 7 + \textcolor{#e03131}{\mathbf{9}} \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 4 &= 20 & \qquad 50 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} \textcolor{#e03131}{\mathbf{8}} - 10 &= 32 \end{aligned}\]
