\set_margins 10
%f011
%uRemembering Numbers%u%n%n

\set_margins 20
%f010
To do mental math effectively, it helps if you can remember one
 number while computing other numbers.%n%n

\set_margins 20
%f015
To practice this, do problems like these without pencil and paper.%n%n

Which fact is greater?%n%n

4x3 or 2x7?%n
4x7 or 9x3?%n
3x5 or 4x4?%n
6x5 or 4x8?%n
2x9 or 4x6?%n
7x3 or 5x4?%n%n

%n%n
         