Introduction to area and unit squares | Measurement | Pre-Algebra | Khan Academy
4:17
Introduction to area and unit squares | Measurement | Pre-Alge…
624.2K viewsSep 27, 2013
YouTubeKhan Academy
Solving ratio problems with graph | Pre-Algebra | Khan Academy
1:34
Solving ratio problems with graph | Pre-Algebra | Khan Academy
288.1K viewsAug 11, 2015
YouTubeKhan Academy
Adding fractions with like denominators | Fractions | Pre-Algebra | Khan Academy
3:18
Adding fractions with like denominators | Fractions | Pre-Alg…
1.2M viewsAug 7, 2010
YouTubeKhan Academy
Math patterns example 2 | Applying mathematical reasoning | Pre-Algebra | Khan Academy
5:41
Math patterns example 2 | Applying mathematical reasoning | Pre-Alge…
216K viewsAug 11, 2015
YouTubeKhan Academy
Math patterns example 1 | Applying mathematical reasoning | Pre-Algebra | Khan Academy
3:38
Math patterns example 1 | Applying mathematical reasoning | Pre-Alge…
424.2K viewsAug 11, 2015
YouTubeKhan Academy
Simplifying rates and ratios | Ratios, proportions, units, and rates | Pre-Algebra | Khan Academy
2:28
Simplifying rates and ratios | Ratios, proportions, units, and rates | Pre …
430.6K viewsAug 11, 2010
YouTubeKhan Academy
Adding and simplifying radicals | Pre-Algebra | Khan Academy
7:57
Adding and simplifying radicals | Pre-Algebra | Khan Academy
814.1K viewsApr 16, 2010
YouTubeKhan Academy
9:50
Adding and subtracting fractions | Fractions | Pre-Algebra | Khan Aca…
2.9M viewsJan 9, 2007
YouTubeKhan Academy
2:06
Adding mixed numbers | Fractions | Pre-Algebra | Khan Academy
585.6K viewsAug 7, 2010
YouTubeKhan Academy
2:41
Dividing mixed numbers | Fractions | Pre-Algebra | Khan Academy
764.3K viewsAug 7, 2010
YouTubeKhan Academy
4:06
How to add fractions that have different denominators | Fraction…
2.5M viewsAug 7, 2010
YouTubeKhan Academy
1:17
Dividing fractions example | Fractions | Pre-Algebra | Khan Aca…
760.7K viewsDec 27, 2013
YouTubeKhan Academy
4:42
Converting within the metric system | Pre-Algebra | Khan Academy
345.5K viewsSep 6, 2010
YouTubeKhan Academy
3:59
Subtracting mixed numbers | Fractions | Pre-Algebra | Khan Aca…
780.4K viewsAug 8, 2010
YouTubeKhan Academy
5:33
Adding numbers with different signs (example) | Pre-Algebra | Khan Ac…
1.5M viewsJan 19, 2011
YouTubeKhan Academy
9:36
Negative numbers introduction | Negative numbers and absolute v…
2.2M viewsFeb 15, 2011
YouTubeKhan Academy
2:47
Identifying fraction parts | Fractions | Pre-Algebra | Khan Academy
650.8K viewsAug 6, 2010
YouTubeKhan Academy
9:23
Converting fractions to decimals | Decimals | Pre-Algebra | Khan Aca…
2.2M viewsApr 9, 2007
YouTubeKhan Academy
4:36
Order of operations example: putting it all together | Pre-Algebr…
608.2K viewsJan 19, 2011
YouTubeKhan Academy
9:53
Finding factors of a number | Factors and multiples | Pre-Algebr…
1.5M viewsAug 6, 2010
YouTubeKhan Academy
3:50
Introduction to multiplying decimals | Decimals | Pre-Algebra | Khan Ac…
786.5K viewsDec 27, 2013
YouTubeKhan Academy
5:42
Understanding division of fractions | Fractions | Pre-Algebra | Khan Aca…
1M viewsAug 11, 2015
YouTubeKhan Academy
5:58
Stem-and-leaf plots | Applying mathematical reasoning | Pre-Alge…
832.3K viewsNov 14, 2011
YouTubeKhan Academy
6:26
Matrix multiplication introduction | Matrices | Precalculus | Khan Aca…
643.2K viewsMar 17, 2014
YouTubeKhan Academy
20:48
Introduction to scientific notation | Pre-Algebra | Khan Academy
842.1K viewsNov 2, 2009
YouTubeKhan Academy
7:50
Volume: how to measure it | Measurement | Pre-Algebra | Kha…
670.8K viewsAug 21, 2013
YouTubeKhan Academy
2:30
Comparing fractions | Fractions | Pre-Algebra | Khan Academy
524.1K viewsAug 6, 2010
YouTubeKhan Academy
3:03
Introduction to exponents | Pre-Algebra | Khan Academy
1.2M viewsAug 2, 2013
YouTubeKhan Academy
5:17
Number sets | Fractions | Pre-Algebra | Khan Academy
360.4K viewsJul 15, 2011
YouTubeKhan Academy
See more videos
Static thumbnail place holder