\[\boxed{\text{Продолжи}\text{\ }\text{на}\text{\ }\text{стр}\text{.\ 83}}\]
\[180\ :90 + 99 = 2 + 99 = 101\]
\[270\ :90 + 89 = 3 + 89 = 92\]
\[360\ :90 + 79 = 4 + 79 = 83\]
\[450\ :90 + 69 = 5 + 69 = 74\]
\[540\ :90 + 59 = 6 + 59 = 65\]
\[630\ :90 + 49 = 7 + 49 = 56\]
\[720\ :90 + 39 = 8 + 39 = 47\]
\[810\ :90 + 29 = 9 + 29 = 38\]