Решебник по математике 3 класс Моро Часть 2 | Страница 99

\[Страница\ 99.\ Что\ узнали.\ Чему\ научились\]

Ребусы (стр. 99)

\[\boxed{\mathbf{Ребусы}\mathbf{\ (}\mathbf{поля}\mathbf{)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[\boxed{\mathbf{1}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1)\ 5\ единиц;\ \ 5\ десятков;\ \]

\[\ 5\ сотен.\]

\[2)\ 777 = 700 + 70 + 7.\]

\[\boxed{\mathbf{2}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1)\ \ + 111:\]

\[123,\ \ \ 234,\ \ \ 345,\ \ \ 456,\ \ \ 567.\]

\[2)\ - 101:\]

\[908,\ \ \ 807,\ \ \ 706,\ \ \ 605,\ \ \ 504.\]

\[\boxed{\mathbf{3}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[500 + 40 - 1 = 540 - 1 = 539\]

\[630 - 30 + 1 = 600 + 1 = 601\]

\[675 - 5 - 1 = 670 - 1 = 669\]

\[300 + 99 + 1 = 399 + 1 = 400\]

\[400 + 21 = 421\]

\[421 - 400 = 21\]

\[\boxed{\mathbf{4.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1)\ 120 \cdot 5\ :100 = 600\ :100 = 6\]

\[2)\ 560\ :8 \cdot 10 = 70 \cdot 10 = 700\]

\[3)\ 85 - (16 + 5) = 85 - 21 = 64\]

\[4)\ 25 + 90\ :15 = 25 + 6 = 31\]

\[\boxed{\mathbf{5}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[45 - 15 \cdot 6\ :18 = 45 -\]

\[- 90\ :18 = 45 - 5 = 40\]

\[8 + 28\ :7 \cdot 16 = 8 + 4 \cdot 16 =\]

\[= 8 + 64 = 72\]

\[25 \cdot 3 - 15 \cdot 4 = 75 - 60 = 15\]

\[56 + 4 \cdot 8 - 20 = 36 + 32 = 68\]

\[(67 - 20) \cdot 3 = 47 \cdot 3 = 141\]

\[(72 - 30)\ :6 = 42\ :6 = 7\]

\[7 \cdot (9 + 5) = 7 \cdot 14 = 98\]

\[15 \cdot (14 - 9) = 15 \cdot 5 = 75\]

\[0 \cdot 27 = 0\]

\[0\ :27 = 0\]

\[0 + 27 = 27\]

\[27 - 0 = 27\]

\[\boxed{\mathbf{6}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[\boxed{\mathbf{7}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[6\ дм\ 3\ мм = 603\ мм\]

\[4\ м\ 5\ см = 405\ см\]

\[7\ р = 700\ к\]

\[5\ ч = 300\ мин\]

\[\boxed{\mathbf{8}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[65\ :9 = 7\ (ост.\ 2) \Longrightarrow 7 \cdot 9 +\]

\[+ 2 = 65\]

\[54\ :8 = 6\ (ост.\ 6) \Longrightarrow 8 \cdot 6 +\]

\[+ 6 = 54\]

\[38\ :4 = 9\ (ост.\ 2) \Longrightarrow 9 \cdot 4 +\]

\[+ 2 = 38\]

\[27\ :6 = 4\ (ост.\ 3) \Longrightarrow 4 \cdot 6 +\]

\[+ 3 = 27\]

\[85\ :9 = 9\ (ост.\ 4) \Longrightarrow 9 \cdot 9 +\]

\[+ 4 = 85\]

\[74\ :8 = 9\ (ост.\ 2) \Longrightarrow 9 \cdot 8 +\]

\[+ 2 = 74\]

\[75\ :20 = 3\ (ост.\ 15) \Longrightarrow 3 \cdot 20 +\]

\[+ 15 = 75\]

\[83\ :40 = 2\ (ост.\ 3) \Longrightarrow 2 \cdot 40 +\]

\[+ 3 = 83\]

\[14\ :20 = 0\ (ост.\ 14) \Longrightarrow 20 \cdot 0 +\]

\[+ 14 = 14\]

\[36\ :40 = 0\ (ост.\ 36) \Longrightarrow 0 \cdot 40 +\]

\[+ 36 = 36\]

\[\boxed{\mathbf{9}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[650 + 30 = 680\]

\[780 - 70 = 710\]

\[240 - 20 = 220\]

\[40 \cdot 4 = 160\]

\[80 \cdot 7 = 560\]

\[90 \cdot 6 = 540\]

\[640\ :8 = 80\]

\[540\ :9 = 60\]

\[270\ :3 = 90\]

\[130 \cdot 5 = 650\]

\[150 \cdot 4 = 600\]

\[750\ :3 = 250\]