Speed math
By: by Gaurav Tekriwal
Series: Idiot's guides, as easy as it gets!; Idiot's guides
Publisher: Alpha, a member of Penguin Group (USA)
Published: 2014
Place of publication: New York
Language: eng
Number of pages: 272
ISBN-13: 9781615643165
Subjects: Arithmetic; Problems, exercises
Description: "Simple methods for doing math quickly in your head; Shortcuts and tricks for on-paper calculations; Helpful insights to improve your understanding"--
Notes: Includes index.
Table of contents: title: High-speed operations. Multiplication ; Addition ; Subtraction ; Division ; Checking your answers with digit sums; title: High-speed math applications. Fractions ; Decimals ; Percentages ; Divisibility ; Squared numbers ; Cubed numbers ; Numbers to the fourth and fifth powers ; Square and cube roots; title: Practice problems; title: Answer key.