Singh Tricks

Performance Toolkit 2011 (Size: 28 MB) SERIAL KEY: Name: Team ROGUE Serial: 9C7C-1118-9433-19A8-0BD0-D93C-C5A7-1D91-E4B5-E720

Addition When we were at school, we have been taught how to sum two or more numbers together by using the right to left approach. With this method, you first sum the decimal part of the number, then you move to the hundreds and so on. This works good on paper, but it’s a pain when you’re doingmental calculations. Fortunately, the solution is very easy. Left to right approach Instead of using a right to left approach, we can start from the left and move to theright. Take the following example: Usually, you would first sum up 4 to 45, and then and 30 to the result. But by using the left to right approach, you first sum up 30 to 45, and then you add 4 to the result. Although this exampleis very simple, you’ll see theadvantages of this method as you start to use it. If you’re working with three digits numbers, the process is the same. For example 45+34 now, (45+30)=(75+4)=79 This example is a bit more complicated than the previous one, yet it’s very easy to solve using the left t

Quickly find percentages *. To find out the 15% of a number, divide it by 10 andthe add half of it. *. To find out the 20% of a number, divide it by 10 andmultiply the result by two. *. To find out the 5% of a number, divide it by 10 andthe divide it by two.

Multiply by 9 To multiply by 9, simply multiply by 10 and then subtract the number itself. For example 9*11 now, 9*11=10*11=110-11=99

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. Notice that they both start with 4, and that the sum of their second digit is 10. In this case there’s a simple rule that you can use to find their product. Simply multiply the first digit (4) for the nexthigher number (5) and then append the product of their second digits. For example 1).42*48 now, (4*5)(2*8)=2016 2).91*99 Now, (9*10)(1*9)=9009 Note that if the product of the second digits is below ten, you have to add a 0 in front of it.

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. There is, however, a simple trick that’ll do the job for any two digits number. To find out the result, write the first digit followed by the addition of the first and second digit, followed by the second digit. For example 36*11 now, 3(3+6)6=396 Example: What happens if the sum of the two numbers is bigger than 9? In this case you add 1 to the first number, followed by the last digit of the addition of the two numbers, and then again you add the second number For example 87*11 now, 8(8+7)7=957

Square any two digits number that ends with 5 Calculating the square of a number below 100 is extremely simple. If you wantto find the square of 25 for example, you simply have to take the first digit (2), multiply it for the next highernumber (3), and then add 25 to the result. For example 1). 25*25 now, (2*3)25=625 2). 75*75 now, (7*8)25=5625