Страница 56, ГДЗ по математике за 3 класс к тренажёру Погореловой

\[\begin{aligned} 720 : 4 &= 400 : 4 + 320 : 4 = \textcolor{#e03131}{\mathbf{100}} \textcolor{#e03131}{+} \textcolor{#e03131}{\mathbf{80}} = \textcolor{#e03131}{\mathbf{180}} \\ 208 \cdot 3 &= 200 \cdot 3 + 8 \cdot 3 = \textcolor{#e03131}{\mathbf{600}} \textcolor{#e03131}{+} \textcolor{#e03131}{\mathbf{24}} = \textcolor{#e03131}{\mathbf{624}} \\ 560 : 4 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} : \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} + 160 : \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} = \textcolor{#e03131}{\mathbf{100}} \textcolor{#e03131}{+} \textcolor{#e03131}{\mathbf{40}} = \textcolor{#e03131}{\mathbf{140}} \\ 330 \cdot 3 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} + \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} = \textcolor{#e03131}{\mathbf{900}} \textcolor{#e03131}{+} \textcolor{#e03131}{\mathbf{90}} = \textcolor{#e03131}{\mathbf{990}} \\ 960 : 4 &= \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} : \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} + 160 : \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} = \textcolor{#e03131}{\mathbf{200}} \textcolor{#e03131}{+} \textcolor{#e03131}{\mathbf{40}} = \textcolor{#e03131}{\mathbf{240}} \end{aligned}\]

\[\begin{aligned} 180 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 90}}\rule[-0.35em]{0pt}{0.35em}}{:} 2 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 180 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 60}}\rule[-0.35em]{0pt}{0.35em}}{:} 3 & \qquad 70 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 350}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 5 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 40 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 360}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 9 \\ 600 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 150}}\rule[-0.35em]{0pt}{0.35em}}{:} 4 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 500 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 100}}\rule[-0.35em]{0pt}{0.35em}}{:} 5 & \qquad 23 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 92}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 4 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 17 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 85}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 5 \\ 360 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 60}}\rule[-0.35em]{0pt}{0.35em}}{:} 6 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 480 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 60}}\rule[-0.35em]{0pt}{0.35em}}{:} 8 & \qquad 80 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 480}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 6 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 7 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 490}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 70 \\ 280 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 70}}\rule[-0.35em]{0pt}{0.35em}}{:} 4 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 420 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 60}}\rule[-0.35em]{0pt}{0.35em}}{:} 7 & \qquad 14 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 70}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 5 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 12 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 84}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 7 \\ 720 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 360}}\rule[-0.35em]{0pt}{0.35em}}{:} 2 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 600 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 200}}\rule[-0.35em]{0pt}{0.35em}}{:} 3 & \qquad 30 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 270}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 9 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 70 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 280}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 4 \end{aligned}\]

\[\begin{aligned} \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} \cdot 3 &= 690 & \qquad 3 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} &= 750 \\ 4 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} &= 840 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} : 5 &= 120 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} : 2 &= 150 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} \cdot 2 &= 480 \\ 480 : \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em} &= 120 & \qquad 960 : \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} &= 320 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} \cdot 5 &= 800 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} \cdot 4 &= 720 \end{aligned}\]