Double Digit Addition and Subtraction Workbook: our products include 1 math workbook, 50 pages of double-sided printing, designed for 1st to 3rd graders to enhance math skills, making it convenient for daily practice and learning Quality Material: our math practice book is made with paper and safe printing technology, ensuring a healthy experience; The size of 21.5 x 28 cm is suitable for kids learners Simply Tear off: this double digit math problem workbook is bound with a lay-flat glue binding, this 50-page math workbook allows children to tear off it for focused practice; Designed for 1st to 3rd graders, its visual aids help elementary students practice addition and subtraction daily, achieving greater accuracy and confidence Ideal for Elementary Students (grades 1-3): the math practice books has vertical lines, color-coded blocks, and divider lines, this design helps children distinguish between the ones and tens places, improving calculation accuracy, it designed with large box, neatly arranged numbers, lets children focus on calculations, colorful border design, change color every 10 pages, relieve visual fatigue and more fun Educational Complement to Primary School Math Books: this math practice books serves as a supplement to primary school math textbooks, the comprehensive features of the workbook aim to improve child's math skills; Through structured practice and self-assessment, it helps children improve precision and efficiency, while teaching them the value of these essential skills Features: Loved by teachers, parents This innovative approach is designed to engage both boys and girls, making it an ideal tool for developing strong mathematical reasoning skills. Blending tradition with Innovation Combining time-tested teaching methods with contemporary learning techniques, this workbook bridges the gap between classic and modern education for a well-rounded math experience. Specifications: Material: paper Color: colorful Size: approx. 11 inches/ 28 cm long, approx. 8.5 inches/ 21.5 cm in wide Package includes: 1 x Math workbook Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.