Adding and subtracting negative numbers | Pre-Algebra | Khan Academy
4:07
Adding and subtracting negative numbers | Pre-Algebra | Khan Aca…
2.1M viewsAug 10, 2015
YouTubeKhan Academy
Introduction to ratios | Ratios, proportions, units, and rates | Pre-Algebra | Khan Academy
14:13
Introduction to ratios | Ratios, proportions, units, and rates | Pre …
2.4M viewsNov 5, 2009
YouTubeKhan Academy
Introduction to area and unit squares | Measurement | Pre-Algebra | Khan Academy
4:17
Introduction to area and unit squares | Measurement | Pre-Alge…
623.6K viewsSep 27, 2013
YouTubeKhan Academy
Dividing mixed numbers and fractions | Fractions | Pre-Algebra | Khan Academy
3:22
Dividing mixed numbers and fractions | Fractions | Pre-Algebra …
349.3K viewsAug 7, 2010
YouTubeKhan Academy
Math patterns example 1 | Applying mathematical reasoning | Pre-Algebra | Khan Academy
3:38
Math patterns example 1 | Applying mathematical reasoning | Pre-Alge…
424K viewsAug 11, 2015
YouTubeKhan Academy
Adding mixed numbers with unlike denominators | Fractions | Pre-Algebra | Khan Academy
5:16
Adding mixed numbers with unlike denominators | Fractions | Pre-Alg…
590.4K 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…
215.8K viewsAug 11, 2015
YouTubeKhan Academy
5:05
Solving ratio problems with tables example 1 | Pre-Algebra | Khan Ac…
750.8K viewsAug 11, 2015
YouTubeKhan Academy
2:41
Dividing mixed numbers | Fractions | Pre-Algebra | Khan Academy
764.3K viewsAug 7, 2010
YouTubeKhan Academy
4:42
Converting within the metric system | Pre-Algebra | Khan Academy
345.4K viewsSep 6, 2010
YouTubeKhan Academy
7:57
Adding and simplifying radicals | Pre-Algebra | Khan Academy
814.1K viewsApr 16, 2010
YouTubeKhan Academy
1:34
Solving ratio problems with graph | Pre-Algebra | Khan Academy
287.9K viewsAug 11, 2015
YouTubeKhan Academy
3:59
Subtracting mixed numbers | Fractions | Pre-Algebra | Khan Aca…
780.2K viewsAug 8, 2010
YouTubeKhan Academy
1:17
Dividing fractions example | Fractions | Pre-Algebra | Khan Aca…
760.5K viewsDec 27, 2013
YouTubeKhan Academy
2:45
Creating a fraction through division of whole numbers | Fractions | Pr…
242.9K viewsAug 9, 2013
YouTubeKhan Academy
9:23
Converting fractions to decimals | Decimals | Pre-Algebra | Khan Aca…
2.2M viewsApr 9, 2007
YouTubeKhan Academy
4:31
Number patterns: interpreting relationships | Pre-Algebra | Khan …
124.6K viewsAug 11, 2015
YouTubeKhan Academy
4:26
Converting mixed numbers to improper fractions | Fractions | Pr…
758.1K viewsJul 15, 2011
YouTubeKhan Academy
2:06
Adding mixed numbers | Fractions | Pre-Algebra | Khan Academy
585.5K viewsAug 7, 2010
YouTubeKhan Academy
5:42
Understanding division of fractions | Fractions | Pre-Algebra | Khan Aca…
1M viewsAug 11, 2015
YouTubeKhan Academy
3:18
Adding fractions with like denominators | Fractions | Pre-Alg…
1.2M viewsAug 7, 2010
YouTubeKhan Academy
3:23
Commutative property for addition | Arithmetic properties | Pre-Algebr…
246.3K viewsJan 19, 2011
YouTubeKhan Academy
9:36
Negative numbers introduction | Negative numbers and absolute v…
2.2M viewsFeb 15, 2011
YouTubeKhan Academy
2:36
Number patterns: Seeing relationships | Applying mathemat…
263.4K viewsAug 11, 2015
YouTubeKhan Academy
2:30
Comparing fractions | Fractions | Pre-Algebra | Khan Academy
524K viewsAug 6, 2010
YouTubeKhan Academy
2:47
Identifying fraction parts | Fractions | Pre-Algebra | Khan Academy
650K viewsAug 6, 2010
YouTubeKhan Academy
6:28
Multiple rates word problem | Ratios, proportions, units, and rat…
528.9K viewsAug 10, 2013
YouTubeKhan Academy
9:53
Finding factors of a number | Factors and multiples | Pre-Algebr…
1.5M viewsAug 6, 2010
YouTubeKhan Academy
7:44
Exponent rules part 2 | Exponents, radicals, and scientific notation | P…
863.5K viewsJan 27, 2007
YouTubeKhan Academy
6:17
Number sets 1 | Fractions | Pre-Algebra | Khan Academy
225K viewsNov 24, 2010
YouTubeKhan Academy
See more videos
Static thumbnail place holder