$$\begin{array}{llllllllllll}\hfill 4\cdot 5& =& \hfill 10\cdot 4& =& \hfill 7\cdot 9& =& \hfill & & \hfill & & \hfill & \\ \hfill 8\cdot 4& =& \hfill 7\cdot 5& =& \hfill 10\cdot 5& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 1\cdot 8& =& \hfill 7\cdot 3& =& \hfill 1\cdot 9& =& \hfill & & \hfill & & \hfill & \\ \hfill 1\cdot 5& =& \hfill 9\cdot 1& =& \hfill 2\cdot 10& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 6\cdot 9& =& \hfill 6\cdot 8& =& \hfill 1\cdot 10& =& \hfill & & \hfill & & \hfill & \\ \hfill 6\cdot 3& =& \hfill 8\cdot 8& =& \hfill 4\cdot 4& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 5\cdot 9& =& \hfill 2\cdot 4& =& \hfill 8\cdot 9& =& \hfill & & \hfill & & \hfill & \\ \hfill 3\cdot 4& =& \hfill 5\cdot 8& =& \hfill 9\cdot 2& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 6\cdot 1& =& \hfill 8\cdot 6& =& \hfill 9\cdot 4& =& \hfill & & \hfill & & \hfill & \\ \hfill 2\cdot 7& =& \hfill 5\cdot 6& =& \hfill 1\cdot 2& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 7\cdot 2& =& \hfill 8\cdot 7& =& \hfill 3\cdot 3& =& \hfill & & \hfill & & \hfill & \\ \hfill 5\cdot 5& =& \hfill 9\cdot 10& =& \hfill 8\cdot 2& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 9\cdot 3& =& \hfill 10\cdot 2& =& \hfill 5\cdot 7& =& \hfill & & \hfill & & \hfill & \\ \hfill 1\cdot 6& =& \hfill 5\cdot 2& =& \hfill 9\cdot 5& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 10\cdot 3& =& \hfill 2\cdot 1& =& \hfill 10\cdot 9& =& \hfill & & \hfill & & \hfill & \\ \hfill 7\cdot 8& =& \hfill 6\cdot 5& =& \hfill 2\cdot 9& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 7\cdot 6& =& \hfill 3\cdot 5& =& \hfill 2\cdot 2& =& \hfill & & \hfill & & \hfill & \\ \hfill 6\cdot 4& =& \hfill 2\cdot 6& =& \hfill 10\cdot 8& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 8\cdot 5& =& \hfill 1\cdot 4& =& \hfill 6\cdot 10& =& \hfill & & \hfill & & \hfill & \\ \hfill 8\cdot 3& =& \hfill 8\cdot 10& =& \hfill 3\cdot 2& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 4\cdot 7& =& \hfill 8\cdot 1& =& \hfill 9\cdot 9& =& \hfill & & \hfill & & \hfill & \\ \hfill 10\cdot 10& =& \hfill 5\cdot 1& =& \hfill 4\cdot 10& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 3\cdot 7& =& \hfill 1\cdot 7& =& \hfill 4\cdot 6& =& \hfill & & \hfill & & \hfill & \\ \hfill 4\cdot 3& =& \hfill 2\cdot 8& =& \hfill 5\cdot 4& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 3\cdot 1& =& \hfill 4\cdot 1& =& \hfill 3\cdot 9& =& \hfill & & \hfill & & \hfill & \\ \hfill 4\cdot 8& =& \hfill 2\cdot 3& =& \hfill 10\cdot 6& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 4\cdot 9& =& \hfill 3\cdot 10& =& \hfill 6\cdot 2& =& \hfill & & \hfill & & \hfill & \\ \hfill 7\cdot 7& =& \hfill 4\cdot 2& =& \hfill 6\cdot 6& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 10\cdot 7& =& \hfill 3\cdot 8& =& \hfill 1\cdot 1& =& \hfill & & \hfill & & \hfill & \\ \hfill 10\cdot 1& =& \hfill 7\cdot 4& =& \hfill 9\cdot 8& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 6\cdot 7& =& \hfill 2\cdot 5& =& \hfill 5\cdot 10& =& \hfill & & \hfill & & \hfill & \\ \hfill 1\cdot 3& =& \hfill 7\cdot 10& =& \hfill 7\cdot 1& =& \hfill & & \hfill & & \hfill & \\ \multicolumn{12}{c}{}\\ \\ \hfill 9\cdot 6& =& \hfill 3\cdot 6& =& \hfill 5\cdot 3& =& \hfill & & \hfill & & \hfill & \\ \hfill 9\cdot 7& =& \hfill & & \hfill & & \hfill & & \hfill \end{array}$$