Practice with the decimal system. Visual representation of the meaning of addition. Understanding of numbers and their place value. Learning the meaning of mathematical terms such as plus, equal, addends, etc. Numbers are made from symbol cards.
Children obtain the amount from the bank.
After verification the quantities are combined, beginning with units. Children will discover that it is necessary to exchange from the bank. Thus children will understand that if they have 13 units, they will obtain a ten bar and have 3 units left.