Решебник по математике 5 класс Ткачева рабочая тетрадь | Страница 24

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

\[1)\ 47 - (15 + 8)\]

\[2)\ (24 + 13) - 21\]

\[3)\ 58 + (66 - 19)\]

\[4)\ (27 - 15) + 90\]

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

\[1)\ 134 - (65 + 34) =\]

\[= (134 - 34) - 65 =\]

\[= 100 - 65 = 35\]

\[2)\ 157 - (57 + 76) =\]

\[= (157 - 57) - 76 =\]

\[= 100 - 76 = 24\]

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

\[1)\ 226 - 73 - 27 =\]

\[= 226 - (73 + 27) =\]

\[= 226 - 100 = 126\]

\[2)\ 348 - 25 - 75 =\]

\[= 348 - (25 + 75) =\]

\[= 348 - 100 = 248\]

\[\boxed{\mathbf{4.}}\]

\[1)\ (237 + 66) - 37 =\]

\[= (237 - 37) + 66 =\]

\[= 200 + 66 = 266\]

\[2)\ (141 + 184) - 84 =\]

\[= 141 + (184 - 84) =\]

\[= 141 + 100 = 241\]

\[3)\ (516 + 39) - 16 =\]

\[= (516 - 16) + 39 =\]

\[= 500 + 39 = 539\]

\[4)\ (825 + 273) - 73 =\]

\[= 825 + (273 - 73) =\]

\[= 825 + 200 = 1025\]