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2 Digit Mental Addition

This video demonstrates mental addition. When adding two 2-digit numbers, you can estimate to come up with an approximate answer. You can also arrive at the exact sum by adding the tens digits and then adding the ones digits. This video walks the viewer through three ways to answer one addition problem.

http://www.gamequarium.org/cgi-bin/search/linfo.cgi?id=7613

From: SqoolTube Videos/Math/Addition

Current Rating: 0.00

Number of Votes: 0

Hits: 247

Date: Jan 13, 2009

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