\[\boxed{\mathbf{Продолжи\ и\ вычисли\ на\ стр.\ 67}}\]
\[1111\ :11 \cdot 2 = 101 \cdot 2 = 202\]
\[2222\ :11 \cdot 3 = 202 \cdot 3 = 606\]
\[3333\ :11 \cdot 4 = 303 \cdot 4 = 1212\]
\[4444\ :11 \cdot 5 = 404 \cdot 5 = 2020\]
\[5555\ :11 \cdot 6 = 505 \cdot 6 = 3030\]
\[6666\ :11 \cdot 7 = 606 \cdot 7 = 4242\]
\[7777\ :11 \cdot 8 = 707 \cdot 8 = 5656\]
\[8888\ :11 \cdot 9 = 808 \cdot 9 = 7272\]
\[9999\ :11 \cdot 10 = 909 \cdot 10 =\]
\[= 9090\]