Speed math for kids :
Handley, Bill.
Speed math for kids : the fast, fun way to do basic calculations / Bill Handley. - Australia : John Wiley & Sons, Inc., c2005. - vi, 240 p. ; 23 cm.
Includes appendices and index.
978-0-7879-8863-0
Mental arithmetic--Study and teaching (Elementary).
372.7 H236 2005
Speed math for kids : the fast, fun way to do basic calculations / Bill Handley. - Australia : John Wiley & Sons, Inc., c2005. - vi, 240 p. ; 23 cm.
Includes appendices and index.
978-0-7879-8863-0
Mental arithmetic--Study and teaching (Elementary).
372.7 H236 2005