The best resource for understanding and reasoning about units, tens, hundreds, and thousands. Includes 100 units, 10 tens, 10 hundreds, and 1 thousand. Essential for number decomposition, comparisons and equivalences between units, tens, hundreds, and thousands, and the first basic mathematical operations (addition, subtraction, and multiplication). The cubes measure 1 cm³. The worksheets have increasing difficulty levels and are numbered from 1 to 4 for each series. They allow the material to be used throughout the school year with children of different levels.

Ages 7 to 9.