Review Add Sub
add 0-5 to 0-5 (10 pages, Page 1 to 10)
add 6-9 to 0-5 (10 pages, Page 11 to 20)
add 6-9 to 6-9 (8 pages, Page 21 to 28)
add 0-9 to 0-5 (13 pages, Page 29 to 41)
add 0-9 to 6-9 (8 pages, Page 42 to 49)
sub 0-5 to 0-5 (16 pages, Page 50 to 65)
sub 6-9 to 0-5 (13 pages, Page 66 to 78)
sub 6-9 to 6-9 (11 pages, Page 79 to 89)
sub 0-9 to 1-7 (10 pages, Page 90 to 99)
add 10-14 to 0-5 (12 pages, Page 100 to 111)
add 10-19 to 1-5 (7 pages, Page 112 to 118)
add 10-19 to 6-9 (4 pages, Page 119 to 122)
sub 10-19 to 0-5 (7 pages, Page 123 to 129)
sub 10-19 to 6-9 (5 pages, Page 130 to 134)
sub 10-19 to 10-14 (7 pages, Page 135 to 141)
sub 10-19 to 15-19 (7 pages, Page 142 to 148)
Add Sub Facts (11 pages, Page 149 to 159)