These 5 unique printable worksheets are designed to help elementary age children learn subtraction facts focusing on numbers 11 and 12 relative to 0 through 12. There are 50 problems per worksheet. The goal is to be able to complete all 50 correctly in 2:30 minutes. Some children may need to complete several sheets to reach their goal. Each time, allow the children to complete the sheet and mark down the time. They love to beat their best time, and with practice, they will meet the goal and have a good grasp of subtraction facts for 11 and 12.