Страница 4, ГДЗ по математике за 3 класс к тренажёру Погореловой

\[{\def\arraystretch{1.6}\begin{array}{ccccccccc} \kern-0.25em10\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\kern-0.25em & \kern-0.25em50\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em}\kern-0.25em & \kern-0.25em90\kern-0.25em \\ \kern-0.25em51\kern-0.25em & \kern-0.25em52\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\kern-0.25em & \kern-0.25em57\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em}\kern-0.25em \\ \kern-0.25em80\kern-0.25em & \kern-0.25em79\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{6}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{5}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{4}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{3}}\kern0.035em}\kern-0.25em & \kern-0.25em\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{7}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{2}}\kern0.035em}\kern-0.25em \end{array}}\]

\[\begin{aligned} 5\text{ дес.} + 2\text{ дес.} &= \textcolor{#e03131}{\mathbf{7}}\text{ дес.} \\ 6\text{ дес.} - 3\text{ дес.} &= \textcolor{#e03131}{\mathbf{3}}\text{ дес.} \\ 4\text{ дес.} + 6\text{ дес.} &= \textcolor{#e03131}{\mathbf{10}}\text{ дес.} \\ 3\text{ дес.} + 6\text{ ед.} &= \textcolor{#e03131}{\mathbf{3}}\text{ дес. }\textcolor{#e03131}{\mathbf{6}}\text{ ед.} \\ 4\text{ дес. }2\text{ ед.} + 7\text{ ед.} &= \textcolor{#e03131}{\mathbf{4}}\text{ дес. }\textcolor{#e03131}{\mathbf{9}}\text{ ед.} \\ 9\text{ дес. }6\text{ ед.} - 4\text{ ед.} &= \textcolor{#e03131}{\mathbf{9}}\text{ дес. }\textcolor{#e03131}{\mathbf{2}}\text{ ед.} \\ 2\text{ дес. }3\text{ ед.} + 5\text{ дес.} &= \textcolor{#e03131}{\mathbf{7}}\text{ дес. }\textcolor{#e03131}{\mathbf{3}}\text{ ед.} \\ 7\text{ дес. }6\text{ ед.} - 2\text{ дес.} &= \textcolor{#e03131}{\mathbf{5}}\text{ дес. }\textcolor{#e03131}{\mathbf{6}}\text{ ед.} \end{aligned}\]

\[\begin{aligned} 56 + 3 &= \textcolor{#e03131}{\mathbf{59}} & \qquad 60 + 23 &= \textcolor{#e03131}{\mathbf{83}} \\ 27 - 4 &= \textcolor{#e03131}{\mathbf{23}} & \qquad 86 - 40 &= \textcolor{#e03131}{\mathbf{46}} \\ 45 + 2 &= \textcolor{#e03131}{\mathbf{47}} & \qquad 30 + 57 &= \textcolor{#e03131}{\mathbf{87}} \\ 98 - 7 &= \textcolor{#e03131}{\mathbf{91}} & \qquad 74 - 20 &= \textcolor{#e03131}{\mathbf{54}} \\ 31 + 9 &= \textcolor{#e03131}{\mathbf{40}} & \qquad 23 + 44 &= \textcolor{#e03131}{\mathbf{67}} \\ 89 - 4 &= \textcolor{#e03131}{\mathbf{85}} & \qquad 57 - 30 &= \textcolor{#e03131}{\mathbf{27}} \\ 76 - 3 &= \textcolor{#e03131}{\mathbf{73}} & \qquad 34 + 20 &= \textcolor{#e03131}{\mathbf{54}} \end{aligned}\]