11. Presburger arithmetic can be extended to include multiplication by constants, since multiplication is repeated addition . 12. The original house has been augmented by repeated additions . 13. Repeated addition of text that is borderline incoherent.14. :: When I finally had to intervene after repeated additions and removals, the paragraph was there. 15. The activity involves repeated addition or removal of category tags from a large number of articles. 16. These tasks don't depend on counting, and cannot be easily conceptualized in terms of repeated addition . 17. Moreover, the repeated addition model must be substantially modified when irrational numbers are brought into play. 18. From the mathematical point of view, multiplication as repeated addition can be " extended " into fractions. 19. :: How about his repeated addition of Putonghua as the " national language " of Hong Kong? 20. Such tasks both require and support models of multiplication that are not based on counting or repeated addition .
