Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the unknown number to represent the problem.

There are 3 videos in this category and 0 videos in 0 subcategories.

Category Videos
Not Right For WatchKnowLearn
Ages: 5 - 9
Subtraction 2 - Khan Academy
From YouTube, produced by Salman Khan
In this video, the instructor uses the software to review how to subtract numbers visually. The instructor also uses a number line. The video is suitable for elementary students. (12:32)
January 27, 2010 at 02:48 AM
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Not Right For WatchKnowLearn
Ages: 3 - 7
Addition Slideshow
From SlideShare, produced by Scotti Sentes
'What Does Addition Mean? Addition is the process of putting two or more things together and counting the total to get the sum usually addition is represented by the symbol + . ' (11 slides; no sound) The slide show is good for visual learners.
April 7, 2010 at 09:08 PM
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Not Right For WatchKnowLearn
Ages: 7 - 12
Rounding Word Problem About Height
From teachertube.com, produced by skippyZ
This short video explains how to solve a word problem involving rounding and subtraction.  The students in the video show the steps needed to solve the problem correctly. (01:06)
Found by CKR11 in 2.MD.B.5
April 26, 2010 at 02:54 PM
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