# themathworld

• ## Pre Algrebra Play all

Pre Algebra covers many of the basic math topics and will provide a firm foundation for those people looking to get into algebra and other advanced math subjects.
• ### Pre Algebra Lesson: GCD or Greatest Common Divisor - Duration: 6 minutes, 41 seconds.

• 11,064 views
• 8 years ago
• ### Pre Algebra Lesson: Mean, Median, and Mode - Duration: 4 minutes, 18 seconds.

• 8,602 views
• 8 years ago
• ### Pre Algebra Lesson: LCM or Lowest Common Multiple - Duration: 8 minutes, 42 seconds.

• 8,647 views
• 8 years ago
• ### Pre Algebra Lesson: Factorials - Duration: 4 minutes, 31 seconds.

• 18,104 views
• 8 years ago
• ### Pre Algebra Lesson: is/of = %/100 - Duration: 5 minutes, 51 seconds.

• 5,269 views
• 8 years ago
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• ## Math Tricks Play all

Math Tricks will help everyone do math faster and easier than ever. The videos will cover all types of math and make the concepts easy to understand.
• ### Math Tricks: Squaring Numbers Ending in 5 - Duration: 3 minutes, 9 seconds.

• 12,755 views
• 8 years ago
• ### Math Tricks: Comparing Fractions - Duration: 2 minutes, 55 seconds.

• 26,227 views
• 8 years ago
• ### Math Tricks: Multiply by 75 - Duration: 5 minutes, 50 seconds.

• 6,086 views
• 8 years ago
• ### Math Trick: Multiplying Trick - Duration: 3 minutes, 14 seconds.

• 30,380 views
• 8 years ago
• ### Math Tricks: Multiply by 111 - Duration: 4 minutes, 53 seconds.

• 6,112 views
• 8 years ago
• ### Math Tricks: Multiply by 11 - Duration: 4 minutes, 3 seconds.

• 8,834 views
• 8 years ago
• ### Math Tricks: Multiply by 101 - Duration: 2 minutes, 35 seconds.

• 4,417 views
• 8 years ago
• ### Math Tricks: Multiply by 25 - Duration: 3 minutes, 51 seconds.

• 12,042 views
• 8 years ago
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• ## Algebra Play all

Algebra looks to build on those foundations set in pre algebra and teaches many of the advanced concepts that arrive in algebra. Those students looking to excel in algebra should be sure and watch all the videos in this section.
• ### Algebra Tutorial- Quadratic Equation - Duration: 6 minutes, 35 seconds.

• 10,444 views
• 8 years ago
• ### Algebra Tutorials- Inequalities - Duration: 6 minutes, 36 seconds.

• 5,226 views
• 8 years ago
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• ### Multiplication - Squaring 50s - Duration: 119 seconds.

• 529 views
• 3 years ago
• ### Multiplication - Squaring 90s - Duration: 2 minutes, 36 seconds.

• 494 views
• 3 years ago
• ### Multiplication - Squaring 40s - Duration: 2 minutes, 30 seconds.

• 149 views
• 3 years ago
• ### Math Trick to Add Fractions - Duration: 3 minutes, 39 seconds.

• 480 views
• 3 years ago
• ### Multiply by numbers between 100-109 - Duration: 2 minutes, 34 seconds.

• 286 views
• 3 years ago
• ### FOIL Method - Multiplication Trick - Duration: 6 minutes, 22 seconds.

• 2,471 views
• 3 years ago
• ### Find the Difference in Squared Numbers - Duration: 2 minutes, 51 seconds.

• 351 views
• 3 years ago
• ### Multiply anything by 12-19 Quickly - Duration: 3 minutes, 48 seconds.

• 651 views
• 3 years ago
• ### Quick Way to Add a Sequence of Numbers - Duration: 3 minutes, 18 seconds.

• 991 views
• 3 years ago
• ### Convert Base b to 10 - Duration: 4 minutes, 42 seconds.

• 621 views
• 3 years ago
• ### Multiply Same # that ends in 5 - Duration: 118 seconds.

• 3,500 views
• 6 years ago
• ### Pre Calculus: Logarithms - Duration: 8 minutes, 32 seconds.

• 46,042 views
• 8 years ago
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