TY  - GEN
AU  - Kelly, Gerard W.
TI  - Short-cut math
SN  - 9781607964391
U1  - 513.92 
PY  - 1984///
CY  - New York
PB  - Snowball Publishing
KW  - Ready - reckoners
N2  - Clear, concise compendium of about 150 time-saving math short-cuts features faster, easier ways to add, subtract, multiply, and divide. Each problem includes an explanation of the method, a step-by-step solution, the short-cut solution, and proof, as well as an explanation of why it works. No special math ability needed. 
(http://www.barnesandnoble.com/w/short-cut-math-gerard-w-kelly/1000159226?ean=9781607964391)
ER  -