Barker Creek’s 1-100 Number Grids Set measures 17″ x 22″ chart. Use this chart for teaching even and odd numbers, counting by 5’s and 10’s, and for counting to 100. These charts can also be used to strengthen counting, adding, subtracting, and rounding skills. This chart is printed on Durable 10-Point Poster board. You’ll find fun, reproducible activities on the back of the chart for added value. Coordinating products are available. Search: Barker Creek Math.