randRange(0, 9)
randRange(0, 9)
randRange(1, 9)
randRange(0, 9)
randRange(0, 9)
randRange(1, 9)
100 * A_100 + 10 * A_10 + A_1
100 * B_100 + 10 * B_10 + B_1
[]
graph.subtractor = new Subtractor( A, B ); graph.subtractor.show(); DUMMY = Array( graph.subtractor.getNumHints() );
A - B
graph.subtractor.showHint();