Страница 2, ГДЗ по математике за 4 класс к тренажёру Погореловой
Повторение. Числа от 1 до 1 000
\[\begin{array}{ccccccc|l} 100 & \textcolor{#e03131}{\mathbf{200}} & 300 & \textcolor{#e03131}{\mathbf{400}} & \textcolor{#e03131}{\mathbf{500}} & \textcolor{#e03131}{\mathbf{600}} & \textcolor{#e03131}{\mathbf{700}} & \textcolor{#808080}{+100} \\ 900 & 850 & 800 & \textcolor{#e03131}{\mathbf{750}} & \textcolor{#e03131}{\mathbf{700}} & \textcolor{#e03131}{\mathbf{650}} & \textcolor{#e03131}{\mathbf{600}} & \textcolor{#808080}{-50} \\ 400 & 420 & \textcolor{#e03131}{\mathbf{440}} & \textcolor{#e03131}{\mathbf{460}} & 480 & \textcolor{#e03131}{\mathbf{500}} & \textcolor{#e03131}{\mathbf{520}} & \textcolor{#808080}{+20} \\ 701 & 702 & \textcolor{#e03131}{\mathbf{703}} & \textcolor{#e03131}{\mathbf{704}} & \textcolor{#e03131}{\mathbf{705}} & \textcolor{#e03131}{\mathbf{706}} & \textcolor{#e03131}{\mathbf{707}} & \textcolor{#808080}{+1} \end{array}\]
\[\begin{aligned} 399 + 1 &= \textcolor{#e03131}{\mathbf{400}} & \qquad 500 + 200 &= \textcolor{#e03131}{\mathbf{700}} \\ 700 - 1 &= \textcolor{#e03131}{\mathbf{699}} & \qquad 800 - 400 &= \textcolor{#e03131}{\mathbf{400}} \\ 489 + 1 &= \textcolor{#e03131}{\mathbf{490}} & \qquad 310 + 600 &= \textcolor{#e03131}{\mathbf{910}} \\ 200 - 1 &= \textcolor{#e03131}{\mathbf{199}} & \qquad 790 - 300 &= \textcolor{#e03131}{\mathbf{490}} \\ 810 - 1 &= \textcolor{#e03131}{\mathbf{809}} & \qquad 490 + 10 &= \textcolor{#e03131}{\mathbf{500}} \end{aligned}\]
\[\begin{aligned} 340 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 240}}}{-} 100 &\mathrel{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}} 304 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 204}}}{-} 100 & \qquad 199 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 200}}}{+} 1 &\mathrel{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}} 300 \\ 790 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 990}}}{+} 200 &\mathrel{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}} 790 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 810}}}{+} 20 & \qquad 510 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 509}}}{-} 1 &\mathrel{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}} 511 \\ 599 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 899}}}{+} 300 &\mathrel{\textcolor{#e03131}{\pmb{\boldsymbol{<}}}} 599 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 999}}}{+} 400 & \qquad 709 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 710}}}{+} 1 &\mathrel{\textcolor{#e03131}{\pmb{\boldsymbol{=}}}} 710 \\ 860 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 960}}}{+} 100 &\mathrel{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}} 860 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 760}}}{-} 100 & \qquad 399 \overset{\mathclap{\textcolor{#808080}{\scriptstyle 400}}}{+} 1 &\mathrel{\textcolor{#e03131}{\pmb{\boldsymbol{>}}}} 300 \end{aligned}\]
