Add 10

'Add-to-10' is a unique addition technique that imprints single-digit addition combinations as facts that are easy for the child to recall. The technique uses visual impressions of 10, which when practiced repeatedly enables the child to extrapolate to large-scale numbers. Since the decimal number system is built on the base of 10, this technique lays the foundation for higher-order operations of addi-tion, subtraction, multiplication & division.