Students can employ the 19 times table to memorize the 18 times table. The 18 times table is the result of subtracting the multiples of 19 from the natural numbers 1 to 10. For instance –, \begin{equation} 19 \times 11 \text { equals } 209-11=198 \end{equation}  . Similarly, \begin{equation}19 \times 12 \text { equals } 228-12=216 \end{equation} 

, and so on.