Rapid math :

Julius, Edward H., 1952-.
ACKU
Edward H. Julius.
New York ; Toronto ; Singapore : John Wiley & Sons, Inc., ©1992.
ix, 229 pages : illustrations ; 25 cm.
English
0471575631
9780471575634
Arithmetic.
QA111. / J855 1992
Library of Congress Classification / Monograph
3ACKU000531474
“Over 2,000 practice problems inside”—cover page.
“Increase your calculating speed”—cover page.
Abstract: Contains sixty easy-to-learn math tricks and tips for solving common math problems without a calculator.