Страница 32, ГДЗ по математике за 3 класс к тренажёру Погореловой

\[\begin{aligned} 40 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 20}}\rule[-0.35em]{0pt}{0.35em}}{:} 2 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 60 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 10}}\rule[-0.35em]{0pt}{0.35em}}{:} 6 & \qquad 20 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 80}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 4 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 40 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 80}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 2 \\ 5 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 100}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 20 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 3 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 90}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 30 & \qquad 60 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 3}}\rule[-0.35em]{0pt}{0.35em}}{:} 20 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}}\hspace{0.72em}} 60 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 2}}\rule[-0.35em]{0pt}{0.35em}}{:} 30 \\ 80 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 2}}\rule[-0.35em]{0pt}{0.35em}}{:} 40 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 60 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 2}}\rule[-0.35em]{0pt}{0.35em}}{:} 30 & \qquad 40 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 2}}\rule[-0.35em]{0pt}{0.35em}}{:} 20 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 80 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 2}}\rule[-0.35em]{0pt}{0.35em}}{:} 40 \\ 4 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 40}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 10 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}}\hspace{0.72em}} 3 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 60}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 20 & \qquad 20 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 60}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 3 &\mathrel{\hspace{0.72em}\mathclap{\vcenter{\Large\bigcirc}}\mathclap{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}}\hspace{0.72em}} 30 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 60}}\rule[-0.35em]{0pt}{0.35em}}{\cdot} 2 \end{aligned}\]

\[\begin{aligned} 40 \cdot 2 : 80 &= \textcolor{#e03131}{\mathbf{1}} & \qquad 3 \cdot 30 : 10 &= \textcolor{#e03131}{\mathbf{9}} \\ 60 : 20 \cdot 30 &= \textcolor{#e03131}{\mathbf{90}} & \qquad 20 : 10 \cdot 40 &= \textcolor{#e03131}{\mathbf{80}} \\ 20 \cdot 3 : 10 &= \textcolor{#e03131}{\mathbf{6}} & \qquad 50 \cdot 2 : 10 &= \textcolor{#e03131}{\mathbf{10}} \\ 90 : 30 \cdot 20 &= \textcolor{#e03131}{\mathbf{60}} & \qquad 80 : 40 \cdot 30 &= \textcolor{#e03131}{\mathbf{60}} \\ 5 \cdot 20 : 50 &= \textcolor{#e03131}{\mathbf{2}} & \qquad 4 \cdot 20 : 80 &= \textcolor{#e03131}{\mathbf{1}} \end{aligned}\]

\[\begin{aligned} 8 \cdot (49 - 39) &= \textcolor{#e03131}{\mathbf{80}} & \qquad 40 \cdot (18 : 9) &= \textcolor{#e03131}{\mathbf{80}} \\ (36 + 14) \cdot 2 &= \textcolor{#e03131}{\mathbf{100}} & \qquad 5 \cdot 8 : 20 &= \textcolor{#e03131}{\mathbf{2}} \\ 6 \cdot (87 - 77) &= \textcolor{#e03131}{\mathbf{60}} & \qquad 30 \cdot (24 : 8) &= \textcolor{#e03131}{\mathbf{90}} \\ (19 + 11) \cdot 3 &= \textcolor{#e03131}{\mathbf{90}} & \qquad 10 \cdot 8 : 40 &= \textcolor{#e03131}{\mathbf{2}} \\ 4 \cdot (53 - 33) &= \textcolor{#e03131}{\mathbf{80}} & \qquad 20 \cdot (24 : 6) &= \textcolor{#e03131}{\mathbf{80}} \\ (94 - 54) : 2 &= \textcolor{#e03131}{\mathbf{20}} & \qquad 90 : (5 \cdot 6) &= \textcolor{#e03131}{\mathbf{3}} \end{aligned}\]