The secret to acquiring all these benefits has its basis in learning simple strategies for mental maths. Most of them seek to address the 4 basic areas of mathematical computation. Here are some samples from each of the four categories:
Multiplication
Multiplying double digit numbers is rather difficult to do mentally. If one of these numbers is 11, take the other number and separate its two figures (36X11=3_6). Get the value of their sum (3+6=9) and place it in this middle space (396). The new number is your answer. A challenge arises when the sum of the two values is a double digit number (93X11=9_3). In such a case, place the second digit in that middle position (923); add the first digit to the number in first position (1023).
Addition
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