Practise your calculator skills
By: Nigel Langdon ; edited by Helen Davies ; designed by Graham Round ; illustrated by Naomi Reed...[et al.].
Series: Usborne exercise books
Publisher: Usborne Publishing
Published: 1983
Place of publication: London
Language: eng
Number of pages: 48
Subjects: Mathematical recreations.; Mathematics -- Problems, exercises, etc.; Pocket calculators -- Problems, exercises, etc.
Notes: Includes index.