Mental Addition and Subtraction
Streaming video - 2015
Professor Benjamin demonstrates how easily you can mentally add and subtract one-, two-, and three-digit numbers. He also shows you shortcuts using the complement of a number (its distance from 100 or 1000) and demonstrates the uses of mental addition and subtraction for quickly counting calories and making change.
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[San Francisco, California, USA] :
Kanopy Streaming
2015.
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- Undetermined
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- A Kanopy streaming video
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In Process Record. - Physical Description
- 1 online resource (streaming video file)
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- Du:ra:ti
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- Mode of access: World Wide Web.
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- AVAILABLE FOR USE ONLY BY IOWA CITY AND RESIDENTS OF THE CONTRACTING GOVERNMENTS OF JOHNSON COUNTY, UNIVERSITY HEIGHTS, HILLS, AND LONE TREE (IA).
