How to Calculate Quickly: Full Course in Arithmetic
- Type:
- Other > E-books
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- 1
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- 5.09 MB
- Texted language(s):
- English
- Tag(s):
- How to Calculate Quickly: Full
- Uploaded:
- May 13, 2013
- By:
- chapi8j
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- 171
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How to Calculate Quickly: Full Course in Speed Arithmetic Many useful procedures explained and taught: two-column addition, left-to-right subtraction, direct multiplication by numbers greater than 12, mental division of large numbers, more. Also numerous helpful short cuts. More than 8,000 problems, with solutions.