TREND enterprises, Inc. Hundreds Chart Wipe-Off Chart, 22" x 28" Dry-erase surface makes practicing numbers to 100, skip counting, adding &amp; subtracting easy. Jumbo size allows multiple people to use chart; can be easily viewed from a distance. Extra Value: reproducible activities on chart back. Durable cardstock. 22" x 28". Stores easily in chart-size File 'n Save System Box.