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# Tricks in mathematics

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# Tricks in mathematics

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### Tricks in mathematics

1. 1. TRICKS IN MATHEMATICS By R.Sriram,IX - B
2. 2. Contents  Squaring Methods: o Using special trick o Using multiplying trick  Simple Multiplication Between Numbers differing by 2
3. 3. Squaring Tricks- Special Trick Step1:Take a number.For example , take number 29;write like this: 29 x29
4. 4. Step 2: Add ones digit of the lower Number to the upper 2 digits.
5. 5. Step3: Multiply tens digit of the lower number to the product got. 38 x 2 76
6. 6. Step3:Now,multiply 10 to the new result so formed. 76 x 10 760
7. 7. Step4:Now,multiply ones digit of the lower number to ones digit of the upper number and keep aside the previous product. Add the numbers.
8. 8. Step5: the result is 841. Using Multiplying technique 1.Take a number,e.g, 196. 2.Divide the number by 2.(98) 3.Find the square of this number using the previous trick. 4.Then,multiply the square number by 4
9. 9. 5.The answer is 38416 . Multiplication of 2 numbers differing by 2(within 100) 1.take two numbers and multiply them , like 24 x 26. 2.Take the middle number i.e.,25. 3.Square 25 and subtract 1 from it. 4.(25x 25) – (1)=625-1