With 150 exercises for addition and subtraction (75 for each) and 50 blank "line number" templates for addition and subtraction (25 for each), your kids are capable to practice more.Number Line, the number line is used to develop a deeper understanding of whole number units, using a number line, starting at any point, to add or subtract.The Book Details: (1) size 8.5" x 11," (2) 119 pages
