Multiplying two 2 digit numbers difference of 2
1.Choose a 2-digit number.
2.Select a number either 2 smaller or 2 larger.
3.Square the average of the two numbers.
4.Subtract 1 from this square.
Example:
1.If the first number is 29, choose 31 as the second number.
2.The average of 29 and 31 is 30. Square 30: 30 x 30 = 900.
3.Subtract 1: 900 - 1 = 899.
4.So 29 x31 = 899.
See the pattern?
1.If the first number is 76, choose 74 as the second number.
2.The average of 76 and 74 is 75. Square 75: 75 x 75 = 5625.
3.Subtract 1: 5625 - 1 = 5624.
4.So 76 x 74 = 5624.
Practice this shortcut (remember your methods of squaring numbers).
Notes
Vedic Maths - Notes
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