\set_margins 12
%f011
%uAddition%u%n%n

\set_margins 10
%f010
%uDoubles%u%n%n

\set_margins 20
%f014
Recognize adding a number to itself as a double.%n%n

\set_margins 20
%f015
Children acquire reference points for many other addition
 facts when they thoroughly memorize doubles%n%n

%t050 3 + 3 = 6      3 and 3 more is 6%n%n

%n%n
