Speed math
"Simple methods for doing math quickly in your head; Shortcuts and tricks for on-paper calculations; Helpful insights to improve your understanding"--Cover.
| Main Author: | |
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| Format: | BOOK |
| Other Format: | EBOOK |
| Language: | ENGLISH |
| Published: |
Alpha, a member of Penguin Group (USA) Inc
2014
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| Series: | Idiot's guides |
| Subjects: |