Figure $3\mathrm{.}13$ indicates a make$-$a$-$ten method

for adding $6+8.$

All the sums of whole numbers that add to $10$

or less$$Tomaslav knows these facts $$forwards

and backwards.$$ For example, he knows not

only that $5+2$ is $7,$ but also that $7$ decomposes

into $5+2$ or $2+5.$

O O O $0)0$ O O O

O O O O OOOO

A dot picture for $6+8.$