TREND Addition 0-12 All Facts Skill Drill Flash Cards (169 Pieces) | Content-rich math cards do their job teaching students new skills in a fun way. This educational aid helps students build addition skills. Equations are presented 2 ways to reinforce skills. Complete tables for all numbers 0-12. Self-checking answers on back. Sturdy cards and storage box. Students will delight in mastering new skills. No-see-through cards with quick-sorting rounded corners. quick-sorting rounded corners. Includes 169 cards 3 x 6 . For ages 6 and up.