Plastic Subtraction Ruler Within 20 Addition Ruler Math Decomposition Ruler School Supplies

Label:Yes It is a wonderful way to arouse your baby's interest of cognition of numbers. Clear numbers and accurate decomposition. Arithmetic learning, educational toy, durable, smooth. This plastic ruler is a teaching aid designed specially for the kid. Analyze addition and subtraction to make it easy for children to learn. In addition, your baby's thought can also be exercised greatly. Playing with your kids will make them happy.

Specifications: Material: Plastic Color: Pink, Blue Scale Length: 20cm Ruler Length: 25.5cm Usage: Slide the ruler to select numbers from the box, observe the numbers in the middle combination, and determine that the numbers in the box are the sum of the upper and lower numbers on the right.

Note: 1.The actual color may be a little different from the picture. 2.Due to manual measurement, the size may have 0-1cm difference.

Package Included: 1 * Math Decomposition Ruler