Math Mysteries Subtraction Book Two Author:Mary Hyek A book with subtraction problems within picture outlines. (Similar to a coloring book.) Once the subtraction problems are solved, each area is colored following the color key. Example: Answers 3,6,9 get colored red. Answers 2,4,8 get colored blue, etc. One and two digit problems, some with "carrying over." Geared towards a first or second grade ... more »level.« less