Страница 55, ГДЗ по математике за 3 класс к тренажёру Погореловой

\[\begin{aligned} 30 \cdot 8 &= \textcolor{#e03131}{\mathbf{240}} & \qquad 640 : 8 &= \textcolor{#e03131}{\mathbf{80}} & \qquad 540 : 6 &= \textcolor{#e03131}{\mathbf{90}} \\ 60 \cdot 9 &= \textcolor{#e03131}{\mathbf{540}} & \qquad 810 : 9 &= \textcolor{#e03131}{\mathbf{90}} & \qquad 360 : 9 &= \textcolor{#e03131}{\mathbf{40}} \\ 90 \cdot 2 &= \textcolor{#e03131}{\mathbf{180}} & \qquad 240 : 4 &= \textcolor{#e03131}{\mathbf{60}} & \qquad 630 : 7 &= \textcolor{#e03131}{\mathbf{90}} \\ 40 \cdot 7 &= \textcolor{#e03131}{\mathbf{280}} & \qquad 480 : 6 &= \textcolor{#e03131}{\mathbf{80}} & \qquad 720 : 8 &= \textcolor{#e03131}{\mathbf{90}} \\[0.9em] 480 : 2 &= \textcolor{#e03131}{\mathbf{240}} & \qquad 320 \cdot 2 &= \textcolor{#e03131}{\mathbf{640}} & \qquad 23 \cdot 3 &= \textcolor{#e03131}{\mathbf{69}} \\ 840 : 7 &= \textcolor{#e03131}{\mathbf{120}} & \qquad 205 \cdot 3 &= \textcolor{#e03131}{\mathbf{615}} & \qquad 52 \cdot 4 &= \textcolor{#e03131}{\mathbf{208}} \\ 606 : 2 &= \textcolor{#e03131}{\mathbf{303}} & \qquad 140 \cdot 4 &= \textcolor{#e03131}{\mathbf{560}} & \qquad 35 \cdot 2 &= \textcolor{#e03131}{\mathbf{70}} \\ 550 : 5 &= \textcolor{#e03131}{\mathbf{110}} & \qquad 407 \cdot 2 &= \textcolor{#e03131}{\mathbf{814}} & \qquad 42 \cdot 3 &= \textcolor{#e03131}{\mathbf{126}} \\ 999 : 3 &= \textcolor{#e03131}{\mathbf{333}} & \qquad 250 \cdot 3 &= \textcolor{#e03131}{\mathbf{750}} & \qquad 34 \cdot 2 &= \textcolor{#e03131}{\mathbf{68}} \end{aligned}\]

\[\begin{aligned} 20 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} &= 160 & \qquad 180 : \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} &= 60 \\ 210 : \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} &= 30 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} \cdot 30 &= 270 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} \cdot 60 &= 480 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} : 8 &= 40 \\ 560 : \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} &= 70 & \qquad 50 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em} &= 350 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} : 4 &= 50 & \qquad 420 : \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em} &= 70 \\ 320 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em} &= 640 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} : 4 &= 210 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} : 2 &= 420 & \qquad 130 \cdot \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em} &= 390 \end{aligned}\]