\[Страница\ 76\]
\[\boxed{\mathbf{141.}}\]
\[Складываю\ единицы;\]
\[складываю\ десятки;\]
\[читаю - сто.\]
\[\boxed{\mathbf{142.}}\]
\[42 + 5 = 47\]
\[34 + 3 = 37\]
\[62 + 8 = 70\]
\[87 - 6 = 81\]
\[59 - 4 = 55\]
\[90 - 7 = 83\]
\[15 - 5 + 6 = 16\]
\[23 - 20 + 8 = 11\]
\[36 - 30 + 9 = 15\]
\[\boxed{\mathbf{143.}}\]
\[11 - 7 + 8 = 12\]
\[16 - 8 + 7 = 15\]
\[8 + 9 - 10 = 7\]
\[50 + 35 - 10 = 75\]
\[75 - 20 + 40 = 95\]
\[80 - 50 - 30 = 0\]
\[\boxed{\mathbf{144.}}\]