Mental Math - Multiplication|教育線上App不用買

Practice your mental Multiplication of 2-digit numbers. First practice and master multiplying 1-digit numbers by 2-digits numbers. Use this to them multiply pairs of 2-digit numbers. Learn and practice four methods including (1) the Addition Method; (2) the Subtraction Method; (3) the Factoring Method; (4) the Close-to Method. Once mastered, you will be able to multiply any pair of 2-digit numbers quickly and in your head! You'll also learn how to quickly square any 2-digit number mentally. NO paper, pencil or calculator required. It all starts with mastering mental 1-by-2's (1-digit times 2-digit numbers)! That's it! Practice and master multiplying at the beginner level ALL IN YOUR HEAD. Master these skills mentally through PRACTICE! You'll be given random timed problem sets. Problems set are in three levels, Beginner, Intermediate and Advanced. As you progress from one level to the next, problems become more challenging, but your mastery (mentally) increases. A progress chart is maintained to you can track and monitor progress. Not only will you be able to mentally perform these operations, your familiarity with basic numbers will increase immensely. Great for younger children that are "bored" with the math at school. A real challenge! Give it a try today!

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