When you decide to use the Montessori method, you don't have "workbooks", but you need application Words or an equivalent to make your own worksheet. They are called Black line master. The child also uses notebooks for every subject.
Of course, the method is based on hand-on material, but the child still has to write down his answer. In math, for example, you can make an "addition booklet", like on the picture, I used the addition strip board, and my daughter wrote her answers on the booklet. It was the same for the Seguin board.
There is also this website you can find a few black line masters http://lrt.ednet.ns.ca/PD/BLM/table_of_contents.htm