Angles, Arcs and Sectors: Angles, Circles and Arcs
This clip includes several practical problems in its discussion of angles in circles. It also explains how to find the length of an arc.
Adding Fractions With the Same Denominator: Proper Fractions, Improper Fractions and Mixed Numbers
This clip explains that improper fractions are those in which the numerator is larger than the denominator, while a proper fraction is one whose numerator is less than the denominator. The clip also explains that a mixed number is one which combines...
Adding Fractions with Different Denominators: Summary: Adding Fractions with Different Denominators
This clip reviews the topic of adding fractions with different denominators. It explores three ways this can be done, including writing the multiples of each denominator until a common multiple is found; multiplying the original denominators; and fi...
Adding Fractions with Different Denominators: Shortcut for Common Denominators, A
This clip explains a very simple rule: To add two fractions with different denominators, simply multiply through the first fraction by the denominator of the second, and multiply through the second fraction by the denominator of the first. This will...