"Illustrations copyright © Daniel Postgate ... and Rob Davis, 2014"--Title page verso.
" ... specially adapted by Kjartan Poskitt for younger readers!"--Murderous Maths website (viewed 24/10/14).
'The Secrets of Sums is an abridged version of "The Awesome Arithmetricks" and "The Mean and Vulgar Bits"'--Murderous Maths website (viewed 24/10/14).
Includes index.
The secrets of sums by Kjartan Poskitt. ISBN 9781407147239. Published by Scholastic in 2014. Publication and catalogue information, links to buy online and reader comments.