import re


def default_splitter(text):
    """Searches the given spring for all integer and floating-point
    values, returning them as a list _of strings_.
    
    E.g., the call
    
      default_splitter('Give me $10.52 in exchange for 91 kitten stickers.')
      
    will return ['10.52', '91'].
    """
    fields = re.findall('(\d+\.?\d+)', text)
    return fields