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Ages: 8 - 14
Subtraction for 3th to 6th Grade
From YouTube, produced by Ismail El alaoui
This lesson will teach you about subtraction, it will give you the definition that govern subtraction and the main idea behind it. (14:34)
January 27, 2014 at 09:36 PM
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Not Right For WatchKnowLearn
Ages: 6 - 12
Mental Math Strategies--Break Down to 10 (Subtraction)
From YouTube, produced by youtube
In this video, Mr. Almeida explains how to use mental strategies to subtract within 20 using the Break Down to 10 method. This is one of the strategies suggested in the Common Core State Standards for Mathematics, 1.OA.6 and 2.OA.2. With practice, th... [more]
April 21, 2012 at 09:53 PM
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Not Right For WatchKnowLearn
Ages: 7 - 16
How to Borrow in Subtraction Problems
From YouTube, produced by Tom Leher
Tom Lehrer preforms a song on what he calls "New Math" on how to borrow in subtraction problems. (01:35)
Found by rfuqua in Subtraction
November 22, 2010 at 08:09 PM
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