\[Стр.\ 78.\]
\[\boxed{\mathbf{2.}}\]
\[\boxed{\mathbf{3.}}\]
\[\textbf{а)}\ 42,5\ :10 = 4,25\]
\[\textbf{б)}\ 148,56\ :100 = 1,4856\]
\[\textbf{в)}\ 10,001\ :100 = 0,10001\]
\[\textbf{г)}\ 3794,51\ :1000 = 3,79451\]
\[\textbf{д)}\ 8,49\ :100 = 0,0849\]
\[\textbf{е)}\ 0,7\ :10 = 0,07\]
\[\textbf{ж)}\ 9,467\ :100 = 0,09467\]
\[\textbf{з)}\ 298,7\ :100 = 2,987\]