Часть 1 страница 7, ГДЗ по математике за 4 класс к рабочей тетради Дорофеева

\(1)\ 148 \cdot 2 = \textcolor{#e03131}{\mathbf{296}}\text{ (кг)}\)
\(2)\ 148 + 296 = \textcolor{#e03131}{\mathbf{444}}\text{ (кг)}\)
\(3)\ 760 - 444 = \textcolor{#e03131}{\mathbf{316}}\text{ (кг)}\)
Ответ: \(\textcolor{#e03131}{\mathbf{316}}\) кг.

\[\begin{aligned} 10 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 20 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 30 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 40 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 50 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 60 &= 90 \\ 10 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 20 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 30 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 40 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 50 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 60 &= 110 \\ 10 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 20 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 30 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{-}}}}\hspace{0.72em}} 40 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 50 \mathbin{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{+}}}}\hspace{0.72em}} 60 &= 130 \end{aligned}\]

\[\begin{array}{rcl} \underset{\text{красный замок}}{520 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 80}}}{-} 440} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \underset{\text{белый ключ}}{640 : 8 = \boxed{\smash[b]{\underset{\hspace{2em}}{\textcolor{#e03131}{\mathbf{80}}}}}} \\[10pt] \underset{\text{золотисто-коричневый замок}}{75 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 150}}}{+} 75} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \underset{\text{красный ключ}}{900 : 6 = \boxed{\smash[b]{\underset{\hspace{2em}}{\textcolor{#e03131}{\mathbf{150}}}}}} \\[10pt] \underset{\text{серебристый замок}}{1\,000 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 60}}}{-} 940} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \underset{\text{голубой ключ}}{180 : 3 = \boxed{\smash[b]{\underset{\hspace{2em}}{\textcolor{#e03131}{\mathbf{60}}}}}} \\[10pt] \underset{\text{синий замок}}{\boxed{\smash[b]{\underset{\hspace{4em}}{\textcolor{#e03131}{\boldsymbol{200 - 60}}}}}} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \underset{\text{розовый ключ}}{560 : 4 = \boxed{\smash[b]{\underset{\hspace{2em}}{\textcolor{#e03131}{\mathbf{140}}}}}} \\[10pt] \underset{\text{зелёный замок}}{200 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 130}}}{-} 70} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \underset{\text{зелёный ключ}}{910 : 7 = \boxed{\smash[b]{\underset{\hspace{2em}}{\textcolor{#e03131}{\mathbf{130}}}}}} \\[10pt] \underset{\text{бордовый замок}}{700 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 160}}}{-} 540} & \textcolor{#e03131}{\rule[0.32em]{2.2em}{0.09em}} & \underset{\text{жёлтый ключ}}{800 : 5 = \boxed{\smash[b]{\underset{\hspace{2em}}{\textcolor{#e03131}{\mathbf{160}}}}}} \end{array}\] \(\textcolor{#808080}{\text{Подходит любое выражение}}\) \(\textcolor{#808080}{\text{со значением }{140}\text{,}}\) \(\textcolor{#808080}{\text{например }{70 + 70}\text{.}}\)