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Math

Join our Math World now to meet up with other math students and mathematicians on the Web. Learn how to perform basic math functions, and share your own tips and tricks for solving problems and calculating answers for everything math related, from algebra to geometry to trigonometry to advanced calculus.
Handwriting numbers 20 and 30 on a whiteboard, with "HCF" written at the top.
May 26, 2010

Need to figure out the highest common factor of two numbers? Learn how with this free video lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest math ...

Hand writing calculations related to Least Common Denominator (LCD) on paper.
May 26, 2010

This video lesson demonstrates how to find the lowest common multiple/lowest common denominator (LCM/LCD) using factor trees. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world ...

GCF calculation demonstration with factors for 60 and 18 written on paper.
May 26, 2010

Need to find the greatest common factor for a set of two numbers? Try a factor tree! Learn how with this free video lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's ...

Woman explaining a diagram on a whiteboard.
May 26, 2010

Looking for an easy way to find the least common multiple and greatest common factors for a number set? Try a Venn diagram! Learn how with this free video lesson. From Ramanujan to calculus co-creator ...

Math problem solving on graph paper, showing calculations for least common multiple (LCM).
May 26, 2010

Look for an easy way to find the least (or lowest) common multiple for a set of numbers? Like to think in pictures? Try the upside-down birthday cake method! Learn how with this free video lesson. Fro ...

Person writing numbers on a whiteboard.
May 26, 2010

Looking for an easy method for discovering the lowest common multiple (LCM) and/or greatest common factor for a set of numbers? Try the Indian method! Learn how with this free video lesson. From Raman ...

Math calculation showing the addition of 123 and 36 with long division steps.
May 26, 2010

Here's a neat trick. Learn how to find the greatest common factor for a number set using the Euclidean algorithm! From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and ...

Finding the LCM of 24 and 36 with a division method.
May 26, 2010

Looking for an easy way to find the lowest common multiple (LCM) of a pair of numbers in simple arithmetic? Learn how with this free video lesson. From Ramanujan to calculus co-creator Gottfried Leibn ...

Teacher explaining math problems on a whiteboard.
May 26, 2010

Need a little instruction on how to find the lowest terms of a proper or improper fraction in basic arithmetic? Learn how with this free video lesson. From Ramanujan to calculus co-creator Gottfried L ...

Mathematical equations and annotations on paper, including a function and its domain.
May 26, 2010

Want to find the domain of a function without graphing it? Learn how with this free video lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathem ...