ГДЗ по математике 4 класс Дорофеев рабочая тетрадь Часть 1, 2 Часть 1 | Страница 28

\[\boxed{\mathbf{1.}}\]

\[500 =\]

\[489 + 11\]

\[494 + 6\]

\[499 + 1\]

\[488 + 12\]

\[479 + 21\]

\[498 + 2\]

\[492 + 8\]

\[\boxed{\mathbf{2.}}\]

\[1)\ 73 + 127 = 200\]

\[64 + 36 = 100\]

\[215 + 195 = 400\]

\[46 + 354 = 400\]

\[188 + 412 = 600\]

\[227 + 73 = 300\]

\[165 + 5 = 200\]

\[2)\ 333 + 67 = 400\]

\[182 + 518 = 700\]

\[299 + 101 = 400\]

\[663 + 37 = 700\]

\[485 + 115 = 600\]

\[47 + 53 = 100\]

\[115 + 35 = 150\]

\[250 + 270 = 520\ \]

\[\boxed{\mathbf{3.}}\]

\[136 + 464 + 98 = 600 + 98 =\]

\[= 698\]

\[287 + 55 + 413 = 700 + 55 =\]

\[= 755\]

\[105 + 438 + 362 =\]

\[= 800 + 105 = 905\]

\[589 + 67 + 311 = 900 + 67 =\]

\[= 967\]