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Showing posts with label Homework Help. Show all posts
Showing posts with label Homework Help. Show all posts

Mental Math Tricks Play with 9, 99,999..

Many students math can be nightmare. The attitude towards the maths will change this scary figure. Feel always that Maths is simple and easy. Yes maths is fun and it is easy if you apply our mind. I have listed below few mental tricks to hopefully improve your general knowledge of maths and it will help you speed up when you need to do math in your mind.

When you do multiply by 9, or 99, or 999 or even 9999...

Multiply by 9 is really multiplying by 10-1. Anybody notice this? Yes.  It is true. So, 9×9 is just 9x(10-1) which is 9×10-9 which is 90-9 or 81. Let’s try for a harder sample: 46×9 = 46×10-46 = 460-46 = 414. One more test:  68×9 = 680-68 = 612. And Whenever you multiply by 99, you multiply by 100-1. I will put this into another way that A×99 is as above explained A×100-A thats all. So any, 46×99 = 46x(100-1) = 4600-46 = 4554. Also same way Multiplying by 999 is similar to multiplying by 9 and by 99. 38×999 = 38x(1000-1) = 38000-38 = 37962. This practice will help everyone improve the mental calculation of every maths activities.

Kids preparation for state-exams and advance math programs

Here you will see a varieties of free and print able math work-sheets and for home and school use. Math*kinz a good site I found and feel good whhich offers nummber of work-sheet to suppplement your early child hood edu-cation program, elementary school or middle school. Mathkinz has link to lots of math games where kids can learn math while playing and having fun. Exam and also online math quiz here can make kids pre-pare for state exam and advances math programs.