An exercise book for refreshing knowledge of addition and subtraction operations and more. This comprehensive workbook contains a wide range of exercise, from simple calculations for students who need more practice to more difficult operations for motivated students who are keen to deepen their knowledge in mathematics. It features 400 progressive exercises grouped in 34 thematic chapters with answers provided at the end of the workbook. 1. This progressive workbook helps children revise grades 1 and 2 math programs and acquire improved skills in basic calculation. 2. Problems are designed so that children can learn mathematics in an interactive way by counting, comparing, organizing, coloring, verifying, adding, completing, deciphering, or combining. 3. An answer guide, mathematical principles and extra tips are provided to allow independent work at home. 4. Children will have fun exploring math with Albert, the canine professor, and his friends, who will help them stay motivated along the way.
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