The free online database for home and office. Free Online Idea Management and Collaboration Service | Wridea.com. Cal Newport -- Author: How to Be a High School Superstar, How to Become a Straight-A Student, How to Win at College. Ipl2: Information You Can Trust. Find, share & upload documents. Get better grades | wePapers. Solve Puzzles for Science | Foldit. Uncertainties. LabWrite for Students. Homeworktree | The homework planner that actually plans for you... IB Guides - Free International Baccalaureate study guides, notes, videos and powerpoints. Science encyclopedia.
Halton District School Board CHATT - Tools. Math tricks. One thing that fascinates me is performing mental math. Being able to quickly perform additions, subtraction, multiplications etc is a good way to impress your friends. The problem is, I’m not a math genius, and I don’t know much behind simple arithmetic. If you’re anything like me, but you’d still like to learn some basic math tricks, I hope you’ll find this list useful. Simple tricks How to multiply any two digits number by 11 Let’s say that you want to find the product of 36 and 11.
One way to find it would be to multiply 36 by 10 and then add 36 on the result. Example: What happens if the sum of the two numbers is bigger than 9? Square any two digits number that ends with 5 Calculating the square of a number below 100 is extremely simple. Multiply any two digits numbers with the same first digit and the second digit that sums up to 10 Let’s say that you want to multiply 42 and 48 together. Note that if the product of the second digits is below ten, you have to add a 0 in front of it. ie. Khan Academy. Library of Economics and Liberty.